Top 10 Dry Bag Manufacturers in China [2026 Guide]

Nov 06, 2026

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Choosing the right dry bag manufacturer in China is about more than comparing unit prices. For outdoor gear brands, water sports companies, importers, and wholesale distributors, the right supplier must understand waterproof construction, offer reliable OEM/ODM development, maintain consistent quality, and support international delivery.

China offers a mature manufacturing ecosystem for custom dry bags, waterproof backpacks, roll-top bags, and welded outdoor equipment. But suppliers differ significantly in materials, high-frequency (HF) welding capability, minimum order quantities (MOQs), and product specializations. This guide compares ten Chinese dry bag manufacturers and provides a practical checklist for evaluating potential partners.

The companies are presented as a sourcing shortlist rather than an independently audited, absolute ranking. Company profiles and industry figures reflect the source material compiled for this 2026 guide; buyers should confirm current certifications, capacity, lead times, prices, and waterproof test results directly before ordering.

Top 10 Dry Bag Manufacturers in China

According to the global waterproof bag market report, the market was valued at approximately USD 12.58 billion in 2024 and is projected to reach USD 17.83 billion by 2031, representing a 5.2% CAGR from 2025 to 2031. Separately, the global waterproof backpack market reportedly reached USD 5.745 billion in 2025 and is expected to grow to USD 8.029 billion by 2032, also at a 5.2% CAGR. This demand supports a broad network of Chinese factories producing everything from promotional PVC dry bags to technical TPU waterproof gear.

For international B2B buyers, China offers three practical sourcing advantages:

Integrated supply chains: Access to TPU, PVC, nylon, polyester, zippers, webbing, buckles, printing services, welding molds, and specialist machinery.
Scalable production and cost efficiency: Factories can combine established processes with bulk purchasing and flexible product specifications.
OEM/ODM expertise: Many manufacturers support private-label dry bags, logo printing, material selection, prototype development, waterproof testing, and customized export packaging.

Compliance readiness also matters. Buyers commonly request BSCI social-audit information, ISO management-system certificates, material declarations relevant to EU REACH obligations, and other customer-specific documents. These are not interchangeable requirements: the certificates and evidence needed depend on the product, importer, destination market, and purchasing policy.

Material	Main Characteristics	Typical Applications
TPU	Flexible at low temperatures, abrasion-resistant, and can be welded without conventional plasticizers	Premium waterproof backpacks, technical dry bags, water sports gear
PVC	Durable, economical, and well suited to common welded constructions	Standard roll-top dry bags, promotional bags, bulk wholesale products
500D nylon with TPU coating	Strong woven base fabric with a waterproof weldable coating	Outdoor waterproof backpacks and demanding equipment bags
PEVA	Lightweight material used in selected flexible waterproof or protective applications	Lightweight pouches and some protective or insulated-bag components

HF welding, also called radio-frequency (RF) welding, commonly operates at 27.12 MHz for compatible materials. Rather than stitching through the waterproof panel, the process bonds adjoining surfaces to form sealed seams. Waterproof performance nevertheless depends on the entire construction, including closures, zipper installation, material selection, and finished-product testing.

Manufacturing Region	Key Cities	Typical Strengths
Pearl River Delta, Guangdong	Dongguan, Shenzhen, Zhongshan, Huizhou	High-end OEM waterproof bags, HF welding, complex waterproof structures
Fujian	Quanzhou, Xiamen	Sealed dry bags, outdoor products, OEM/ODM manufacturing and export operations
Yangtze River Delta	Wuxi, Wenzhou, Jinhua	PVC/TPU products, automotive waterproof luggage, outdoor and e-commerce-oriented bags

For buyers researching waterproof bag manufacturers in China, these clusters provide a practical starting point, although individual factory capabilities matter more than geography alone.

A strong OEM dry bag manufacturer should be evaluated across several dimensions rather than a single marketing claim.

Evaluation Factor	What Buyers Should Check	Why It Matters
Manufacturing capacity	Factory size, staffing, production lines, equipment, production scheduling	Determines scalability and ability to handle complex orders
Waterproof technology	HF welding, heat sealing, TPU/PVC expertise, airtight zippers, roll-top construction	Affects seam integrity and suitability for the intended use
Quality management	Incoming, in-process, final, and outgoing inspection; air and water leakage tests	Reduces inconsistency across production batches
OEM/ODM customization	Product development, sampling, materials, logos, molds, packaging, MOQ	Supports brand differentiation and product launches
Compliance documentation	Relevant ISO certificates, BSCI/other audit information, materials testing	Helps buyers assess customer and destination-market requirements
Export experience	Target markets, Incoterms, documentation, communication and logistics support	Reduces sourcing and delivery friction

HF-welded seams, thermal bonding, watertight or airtight zippers, and roll-top closures can serve different performance goals. An IPX8 claim refers to protection under continuous immersion conditions specified for the product; it should not be assumed for every roll-top bag or every HF-welded design. Request the actual test method, immersion depth, duration, sample configuration, and report where a rating is important.

The source material highlights BSCI, ISO 9001, ISO 13485, ISO 14001, SEDEX-related assessments, and REACH documentation as procurement considerations. BSCI audit grades can range from A to E; the initial research notes that C is common among assessed suppliers and describes A as having a two-year validity in the stated context. Treat this as a prompt to review the supplier's current audit status rather than assuming that any single certificate guarantees regulatory market access.

As an illustration of operational potential, the draft research cites mature digital factories reducing sampling to three days, versus an industry reference of 14+ days, while achieving 99.5% on-time delivery and 98% customer satisfaction. These are general industry figures, not verified performance metrics for every company below. Ask each supplier for its own documented sampling and delivery history.

Best suited for: Outdoor brands seeking advanced waterproof construction, functional product development, and end-to-end OEM/ODM services.

Established in 2007, Dongguan Fenglinwan Leisure Products Co., Ltd. (FENGLINWAN) operates from No. 8 Xiaotang Industrial 1st Road, Dongkeng Town, Dongguan, Guangdong, China. Its production facilities cover 16,200 square meters, with more than 200 employees. The company's materials also reference HK Free Cloud Sport Technology Co., Limited as a related outward-facing name.

FENGLINWAN develops and manufactures outdoor waterproof bags and other functional luggage products. Its company materials list ISO 9001, ISO 13485, and BSCI, along with multiple Chinese design and utility-model patents related to functional backpacks. It serves export markets in Europe, the Americas, Japan, South Korea, and South Africa.

FENGLINWAN's product portfolio includes airtight waterproof backpacks, roll-top dry bags and waterproof duffel bags, hunting and outdoor adventure bags, waterproof satchel and crossbody bags, waist bags, and large-capacity rescue and equipment bags. More specialized products include 100L waterproof transport bags and 300L waterproof airdrop supply bags. Its broader range also includes floating waterproof dry bags for water-based activities, cooler bags, lunch bags, business and laptop bags, EVA protective cases, and golf accessories.

For a premium custom dry bag manufacturer, the relevant advantage is the combination of product engineering with manufacturing processes: traditional sewing, bonding, HF welding, thermal-pressure seamless welding, and zipper/closure integration.

The factory works with TPU, PVC, polyester, nylon, PU leather, silicone-based materials, EVA, PEVA, and NBR. Depending on the product design, its waterproof constructions can use airtight, watertight, submersible-waterproof, or water-resistant zippers alongside roll-top closures.

The original company profile describes 100% air leakage testing, 100% water leakage testing, and 100% final quality control (FQC) before packing. Buyers specifying immersion performance should ask which tests are applied to their exact SKU and request the agreed acceptance criteria. Its quality-control workflow also incorporates IQC, IPQC, FQC, and OQC checks.

FENGLINWAN supports private-label and full ODM projects, from modifying existing designs and custom logos to material sourcing, paper patterns, HF welding mold development, sampling, testing, and bulk production. It also provides customized packaging and export documentation such as commercial invoices, packing lists, and certificates of origin, with shipping options including FedEx, DHL, UPS, air freight, and sea freight.

Best suited for: Brands seeking a specialized waterproof bag supplier with production options in China and Vietnam.

Founded in 1998 and registered in Hong Kong, Sealock Outdoor Gear Co., Ltd. operates manufacturing operations in Dongguan, China, and Ho Chi Minh City, Vietnam. This dual-country setup may help international buyers compare sourcing routes and tariff exposure according to the applicable rules of origin.

Sealock focuses on waterproof dry bags, welded bags, dry backpacks, welded cooler and ice bags, waterproof camera bags, messenger bags, and padded equipment inserts. Its profile highlights awareness among European and North American kayaking and canyoneering audiences, including exposure through online outdoor-content creators.

Sealock uses TPU and PVC materials with high-frequency voltage welding to create sealed waterproof constructions. It also combines welded shells with sewn padded inserts for protective camera and outdoor equipment bags.

Its reported starting MOQ is 300 pieces, and OEM services include specialized protective designs for photography, watersports, and outdoor equipment brands. Confirm the MOQ for each material, size, and customization level when requesting a quotation.

Official website: Sealock Outdoor

Best suited for: Importers and brands requiring high-volume production, sealed outdoor bags, and recycled-material sourcing options.

Located in Quanzhou, Fujian, Quanzhou Realfine Bags Co., Ltd. develops and manufactures sealed waterproof bags, dry bags, and other outdoor bags. The original research lists a monthly capacity of more than 300,000 pieces, making it a relevant candidate for higher-volume wholesale dry bag programs.

Realfine's reported manufacturing equipment includes large-power heat welding machines, automatic cutting machines, and computerized pattern-sewing machines. Its sealed products are designed for applications where seam construction and airtightness are important.

The supplier materials list BSCI (DBID: 156-032799-001) and GRS (Global Recycled Standard). GRS-related capabilities may be of interest to brands developing products with specified recycled content, subject to confirming the scope of the certificate and relevant supply-chain documentation.

Realfine offers OEM/ODM dry bag manufacturing, with material, construction, and branding choices tailored to buyers' specifications.

Company website: Realfine Dry Bags

Best suited for: Large-volume buyers sourcing waterproof bags, insulated coolers, delivery bags, and related soft goods.

Weierken Bag Manufacturing was founded in 2006. The source profile lists three self-owned factories across China and Cambodia, more than 80,000 square meters of facilities, and over 3,000 skilled workers. Its cross-border manufacturing infrastructure gives buyers additional options when evaluating production allocation, order volumes, and tariffs.

Weierken makes cooler bags, waterproof backpacks, beach bags, and insulated delivery bags for camping, fishing, watersports, beach travel, food delivery, grocery services, and fleet operators.

The company's materials list BSCI and ISO certifications. Its described waterproof production methods include HF welding and seamless thermal bonding for suitable TPU/PVC designs. Available OEM/ODM services include custom dimensions, material specifications, insulation thickness, and brand details.

For buyers with multiple SKUs or sizeable wholesale orders, its scale and product breadth may be particularly relevant.

Official website: Weierken Bag Manufacturing

Best suited for: Specialized cycling, rafting, motorcycle, fishing, and smaller-batch waterproof bag programs.

Zhongshan Yeguo Outdoor Products Co., Ltd. was established on August 1, 2013, in Zhongshan, Guangdong. According to the draft research, registered capital increased from RMB 10 million to RMB 100 million in April 2023. The source also reports 24 patents, three trademarks, ISO 9001 certification, and 11 employees as of 2024, with additional design-patent activity through 2025.

Its products include cycling waterproof bags, rafting dry bags, hiking bags, phone waterproof pouches, motorcycle bags, waterproof map bags, and fishing dry bags. Production activities are described as covering cutting, sewing, printing, and HF welding.

Yeguo promotes OEM/ODM support and no minimum quantity restriction, a potentially useful policy for prototype evaluation, niche brands, or small-volume launches. Buyers should confirm whether this applies to each specification, since tooling, customized materials, and printing may still have practical minimums.

Best suited for: Technical waterproof storage and water-sports products requiring substantial HF welding capability.

Haizelong (海泽龙) works with Luoding Zhihong Outdoor Products Co., Ltd. as a production base in Luoding, Guangdong. The described factory occupies approximately 10,000 square meters and contains 46 HF welding machines, laser-cutting equipment, precision cutting beds, and more than 60 sewing machines.

The reported workforce includes 80+ production workers, 10 senior technical engineers, and an R&D team of more than 20 people. Its equipment profile is aimed at efficient production of seamless and airtight waterproof structures. As with any supplier, claims of zero water penetration under demanding submersion conditions should be validated against a product-specific test protocol.

The principal products include waterproof bags, waterproof backpacks, and airtight bags for digital storage, cycling, diving, and outdoor watersports. OEM/ODM services cover custom designs, material sourcing, and prototype development.

Company website: Haizelong / Zhihong

Best suited for: Rescue equipment buyers and brands sourcing specialized airtight waterproof or insulated bags.

Located in Quanzhou, Fujian, Quanzhou Xinheng Outdoor Co., Ltd. is described as having more than 20 years of bag manufacturing experience. Its specialist focus spans water sports, rescue applications, and functional outdoor products.

The company's portfolio includes airtight waterproof insulated rescue bags, standard dry bags, first-aid bags, and soft cooler bags. Its materials cite the GB/T 19001-2008 / ISO 9001:2008 quality management framework and a 2010 National Water Sports Equipment Quality Award.

Xinheng's OEM/ODM offering involves customized dimensions, materials, waterproof structures, and thermal-insulation layers. For emergency equipment programs, buyers should specify performance criteria and request up-to-date certification and testing evidence rather than relying solely on historical awards or standards.

Company website: Quanzhou Xinheng

Best suited for: Buyers developing waterproof motorcycle luggage, car roof cargo bags, and PVC/TPU outdoor products.

Wuxi Ruiwan Outdoor Products Co., Ltd., founded on July 20, 2016, is located in Xibei Town, Xishan District, Wuxi, Jiangsu. Its reported registered capital is RMB 1 million.

Ruiwan offers a varied product catalog: PVC waterproof bags, dry bags, car roof cargo bags, pickup truck bed bags, motorcycle tail bags, outdoor backpacks, waterproof barrel bags, rainwear, travel bags, sports bags, toiletry bags, and swimming bags. Its dry bag selection also includes models with transparent diamond-shaped windows.

The company combines TPU fabric with HF seamless welding for waterproof hiking bags and PVC mesh fabric with HF welding for travel-bag applications. It also supports OEM/ODM specifications for outdoor and automotive storage products, including custom sizes and constructions.

Company website: Wuxi Ruiwan Outdoor

Best suited for: International brands seeking integrated prototyping, printing, sewing, welding, and full-process inspection.

Established in 2008, Zhongshan Bijie Technology Co., Ltd. specializes in waterproof bag design, manufacturing, and overseas sales. The research describes a 10,000-square-meter facility with independent R&D, sample rooms, welding, sewing, and printing workshops, plus an R&D team of more than 20 people.

Bijie's profile describes Japanese-style 100% full-process inspection, covering incoming materials, welding, sewing, printing, and packing. While this approach is designed to prevent defects, buyers should still review actual inspection records, acceptance limits, and production-sample results.

Its waterproof bags use PVC and TPU materials and HF-welded constructions. The integration of design, samples, printing, and workshop production supports custom dry bags and OEM/ODM waterproof products for international brands, including bespoke branding and material sourcing.

Best suited for: Brands looking for customized PVC roll-top cycling bags, transparent beach bags, and branded waterproof accessories.

Based in Xiamen, Fujian, Xiamen Zuoyou Weilai Industry & Trade Co., Ltd. is described in the initial research as a BSCI-certified supplier with listings on the Made-in-China platform.

Its product range includes PVC and TPU waterproof dry bags, PVC roll-top bicycle handlebar bags, transparent PVC beach bags, swimming bags, and outdoor storage products. A featured product is a 5L PVC roll-top bicycle front-bar waterproof bag.

The company uses PVC/TPU materials and roll-top closure designs to help protect contents from water exposure during cycling and outdoor activities. OEM services include custom logo printing, material selection, tailored packaging, and related canvas handbag production.

The table below summarizes the information provided in the initial research. "Flexible" indicates that a fixed MOQ was not stated in the source comparison, not that a supplier has confirmed unlimited small-order availability.

Manufacturer	Location	Established	Highlighted Technology or Focus	Reported Certification	MOQ Information
FENGLINWAN (FLW)	Dongguan, Guangdong	2007	HF welding, airtight zippers, advanced waterproof OEM/ODM	ISO 9001, ISO 13485, BSCI	Flexible; confirm by project
Sealock	Dongguan + Vietnam	1998	HF welding, TPU/PVC, protective waterproof bags	Not specified	From 300 pcs
Realfine Bags	Quanzhou, Fujian	Not stated	Heat welding, large-scale sealed bags	BSCI, GRS	Flexible; confirm
Weierken	China + Cambodia	2006	Welded bags, cooler and delivery-bag scale	BSCI, ISO	Flexible; confirm
Yeguo Outdoor	Zhongshan, Guangdong	2013	HF welding, cycling and rafting products	ISO 9001	No stated minimum
Haizelong / Zhihong	Luoding, Guangdong	Not stated	46 HF welding machines, airtight bags	Not specified	Flexible; confirm
Xinheng Outdoor	Quanzhou, Fujian	Approx. 2005*	Airtight rescue bags and insulation	ISO 9001:2008 referenced	Flexible; confirm
Ruiwan Outdoor	Wuxi, Jiangsu	2016	TPU/PVC HF seamless welding, vehicle bags	Not specified	Flexible; confirm
Bijie Technology	Zhongshan, Guangdong	2008	Welding, sewing, full-process QC	Not specified	Flexible; confirm
Zuoyou Weilai	Xiamen, Fujian	Not stated	PVC roll-top cycling and beach bags	BSCI	Flexible; confirm

The best dry bag manufacturer in China depends on your product and commercial requirements. A technically demanding waterproof backpack requires a different supply chain than a promotional PVC roll-top bag or insulated delivery cooler.

Consider the suppliers whose profiles mention BSCI-related information, including FENGLINWAN, Realfine, Weierken, and Zuoyou Weilai. However, verify the current audit report and any customer-mandated social-compliance conditions. For material compliance, request documentation relevant to the actual TPU/PVC formulation and EU REACH obligations, rather than treating a general factory certificate as a substitute.

Sealock and Weierken report production options in Vietnam and Cambodia, respectively. Multi-country sourcing may offer flexibility, but the commercial benefit depends on current tariff rules, country-of-origin requirements, factory allocation, and the precise product classification. A detailed landed-cost comparison is more useful than assuming a tariff advantage.

Prioritize technical evaluation. FENGLINWAN may be relevant for airtight waterproof backpacks and complex OEM/ODM product development; Haizelong/Zhihong for HF-welded technical products; and Xinheng for rescue and insulated waterproof bags. Request production samples and agreed waterproof acceptance criteria.

Realfine reports 300,000+ pieces of monthly production capacity, while Weierken describes extensive multi-factory staffing and diversified soft-goods production. Evaluate line availability, capacity by SKU, raw-material lead times, and replenishment plans, not merely overall facility size.

Yeguo describes a no-minimum-quantity policy, making it a candidate for smaller programs subject to material and tooling limitations. Ruiwan may suit automotive luggage and motorcycle bags, Zuoyou Weilai for cycling and transparent PVC products, and Bijie for integrated development and printing workflows.

A source cited in the original research reported that 82% of online products marketed as "professional waterproof bags" failed a 2024 quality inspection, attributing failures to zipper pitch and unsealed stitching. Regardless of whether that figure is representative of the entire market, it reinforces the need to test the actual product rather than rely on sales descriptions.

Before selecting a dry bag factory in China, ask these questions:

Can you provide randomly selected production-line samples? Request samples from ordinary production stock, not only specially prepared presentation units, and conduct application-appropriate immersion or spray testing.
What is the waterproof test protocol? Clarify whether air leakage and water leakage checks are 100% inspections or sampling-based, and specify the test method, pressure, duration, and pass/fail limits.
What compliance evidence is available? Ask for current audit reports, ISO certificates where relevant, material declarations, and test reports for the exact product or components being purchased.
What is the real MOQ for my specifications? Confirm how custom colors, TPU/PVC material grades, logo processes, packaging, and welding molds affect minimum quantities.
How are samples approved before mass production? Obtain a signed-off reference sample, size tolerances, BOM, material specifications, and a clear process for first-article approval.
What are the sample and bulk lead times? Ask whether the stated production schedule includes material sourcing, new mold fabrication, testing, and shipment preparation.
How are defects and warranty claims handled? Request written procedures covering inspection records, nonconforming goods, corrective actions, and after-sales communication.

For customized waterproof products, specify the intended use clearly. A dry bag built to resist rain or splashes should not automatically be marketed as submersible, and an IPX8 claim should be supported by the relevant design and test conditions.

It varies by factory and specification. The original supplier research gives 300 pieces as a starting MOQ for Sealock and describes no minimum quantity restriction for Yeguo. Other suppliers in the comparison are listed as flexible or without a confirmed fixed MOQ. Material purchasing, printed logos, custom colors, and HF welding molds can change the final minimum.

Neither material is universally better. TPU dry bags are often chosen for premium applications that prioritize flexibility, feel, and performance under demanding conditions. PVC dry bags are widely used where durability and cost efficiency are primary considerations. The final choice should account for the coating formulation, base fabric, seam process, intended temperature range, and target price.

Yes. Many of the manufacturers listed offer private-label dry bag and OEM/ODM services. Common options include logos, colors, sizes, closure systems, materials, accessories, hangtags, cartons, and custom packaging. Full product development may additionally require tooling, prototypes, and waterproof verification.

Ask for a test report covering the finished bag and closure, not only the base fabric. Confirm the test standard, depth or pressure, duration, sample quantity, and test date. If a manufacturer claims IPX8 performance, verify the immersion conditions and whether those conditions match your product's intended use.

Include the product category, size and capacity, target material and fabric thickness, waterproof performance requirements, zipper or roll-top design, logo artwork, colors, expected order quantity, target market, packaging, inspection requirements, Incoterms, and desired delivery date. A technical reference sample or drawing makes quotation comparisons more meaningful.

China has a broad base of suppliers capable of producing wholesale dry bags, waterproof backpacks, and specialized outdoor waterproof products. The companies in this guide offer different strengths: large-scale production, flexible MOQs, cross-border manufacturing, high-frequency welding, insulated rescue gear, or product engineering.

For outdoor brands seeking an experienced custom dry bag manufacturer in China, FENGLINWAN offers OEM/ODM development supported by TPU/PVC material options, HF-welded waterproof construction, functional product design, inspection processes, and export delivery services. Its manufacturing focus extends beyond standard roll-top bags to airtight backpacks and purpose-built functional luggage.

Planning a custom waterproof bag project? Visit FENGLINWAN to discuss your specifications, request samples, or submit an RFQ for OEM/ODM manufacturing. Compare detailed proposals and production samples before committing to a bulk order.

Top 10 Dry Bag Manufacturers in China [2026 Guide]

Why Source Dry Bags from China?

Common Dry Bag Materials and Their Applications

Major Dry Bag Manufacturing Regions in China

How We Selected These Dry Bag Manufacturers

Waterproof Technology, IP Ratings, and Testing

Certifications and Production Efficiency

Dongguan Fenglinwan Leisure Products Co., Ltd. (FENGLINWAN / FLW)

Main Products and Manufacturing Strengths

Waterproof Technology and Quality Control

OEM/ODM and Export Support

Sealock Outdoor Gear Co., Ltd.

Waterproof Manufacturing and Custom Orders

Quanzhou Realfine Bags Co., Ltd.

Equipment, Compliance, and Customization

Weierken Bag Manufacturing

Products and Production Capabilities

Zhongshan Yeguo Outdoor Products Co., Ltd.

Products, Welding, and MOQ Flexibility

Haizelong / Luoding Zhihong Outdoor Products Co., Ltd.

Production Infrastructure and R&D

Quanzhou Xinheng Outdoor Co., Ltd.

Rescue-Grade Product Specialization

Wuxi Ruiwan Outdoor Products Co., Ltd.

Materials and OEM/ODM Products

Zhongshan Bijie Technology Co., Ltd.

Quality Management and Custom Development

Xiamen Zuoyou Weilai Industry & Trade Co., Ltd.

Main Products and Customization

Top 10 Dry Bag Manufacturers in China: Comparison Table

How to Choose the Right OEM/ODM Dry Bag Manufacturer

For European Outdoor Brands

For North American Importers

For Premium Waterproof and Functional Gear

For High-Volume Wholesale and Multi-Category Programs

For Small Batches and Specialized Applications

Questions to Ask Before Placing a Wholesale Dry Bag Order

FAQ

What is the MOQ for custom dry bags in China?

Are TPU dry bags better than PVC dry bags?

Can manufacturers provide private-label dry bags?

How can I verify a waterproof rating?

What should I include in an RFQ for a dry bag supplier?

Final Thoughts: Finding the Right Dry Bag Manufacturing Partner