Industry News

How to Get a Waterproof Bag Sample: Process, Cost and Lead Time

Sealock produces waterproof bag samples for OEM and wholesale buyers from factories in China and Vietnam, with samples in 7–15 days and an MOQ of 300 pieces. Sampling is the cheapest insurance available in this category and the step buyers most often try to compress. It is also where the questions t......

Vietnam or China: Choosing a Waterproof Bag Manufacturing Base in 2026

Sealock manufactures waterproof bags for OEM and wholesale buyers from factories in Dongguan, China and Ho Chi Minh City, Vietnam, with either origin available on any model in the range. For importers, the origin decision changed twice in 2026 and most sourcing advice online is now out of date — inc......

Sewn vs Welded Waterproof Bags: Which Construction Your Product Needs

Sealock manufactures waterproof bags for OEM and wholesale buyers using both high-frequency welding and industrial sewing, run as separate workshops on the same production floor in China and Vietnam. Buyers often arrive at a welded-bag specialist assuming welding is always the better answer and that......

Waterproof Bike Bag Supplier from China

Sealock is a waterproof bike bag supplier and OEM manufacturer serving cycling brands, bikepacking labels, and distributors from factories in China and Vietnam. Sourcing bike luggage carries a risk no other bag category has: a bag can be flawlessly manufactured — perfect welds, clean stitching, corr......

Bike Frame Bag Manufacturer for Bikepacking Brands

Sealock manufactures bike frame bags for bikepacking brands, cycling labels, and OEM programmes from factories in China and Vietnam, with welded and stitched construction in house. The frame bag anchors a bikepacking system — it holds the dense gear at the bike's centre — but it also creates the sin......

OEM Waterproof Bike Bags with Custom Design

Sealock develops OEM waterproof bike bags to custom design for cycling brands, bikepacking labels, and distributors, from factories in China and Vietnam. Bicycle luggage is unlike every other bag category in one respect that shapes the whole development process: the product has to fit a specific mac......

Waterproof Bike Bag Manufacturer for Cycling Brands

Sealock manufactures waterproof bike bags for cycling brands, bikepacking labels, and OEM programmes from factories in China and Vietnam, with welded and stitched construction in house. Bicycle luggage is governed by a constraint no other vehicle category shares: every gram is felt by the rider, and......

Waterproof Fishing Backpacks for Professional Anglers

Sealock manufactures waterproof fishing backpacks for guide services, professional anglers, and OEM brand programmes from factories in China and Vietnam, with welded and stitched construction in house. Among fishing bag formats, the backpack is defined by a specific tension: it carries the most weig......

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