Specification before price
We ask for the product, fill weight, line and market before quoting. A cheap bag that leaks is expensive.
Wenzhou Kunpeng Packaging Co., Ltd.
Built in Wenzhou.
Specified for your line.
We are a valve-bag manufacturer in Pingyang County, Zhejiang — part of Wenzhou's dense packaging-materials cluster. Under the ValveBagSupplier brand, we supply four material systems to converters, distributors and industrial end users.
The company
A focused
valve-bag
manufacturer.
Wenzhou Kunpeng Packaging Co., Ltd. makes PE, PP woven, paper-plastic composite and multi-layer paper valve bags from our base in Xiaojiang Town. The work is deliberately focused: valve bags for industrial powders, granules and pellets.
Valve bags are a fitted component, not a commodity. A bag that runs well on one filling line can leak on another because the valve, film stiffness or paper build does not match the spout and fill rate. That is why we start every project with the product and the line — then choose the material.
Working across four material systems lets us recommend the right structure instead of forcing the product into a single material. It also means we can explain the trade-offs clearly: barrier versus breathability, print quality versus cost, paper recovery versus mixed-layer performance.
Our team handles specification, sampling, artwork, production, QC and export packing. You deal with one contact from the first inquiry to the loaded container.
The range
Four systems. One standard of specification.
Each material has a different job. The range is intentional — it lets us solve the packaging problem rather than sell the same bag to every customer.
01
PE Valve Bags
Moisture-proof film bags with a self-closing valve.
View range
02
PP Woven Valve Bags
High-strength woven bags for granular products.
View range
03
Paper-Plastic Composite Valve Bags
The stiffness of paper, the toughness of plastic.
View range
04
Multi-Layer Paper Valve Bags
2–5 ply kraft sacks for cement, mortar and powders.
View rangeHow we work
Clear specifications. Fewer surprises.
Most problems in this category are not manufacturing failures. They are specification gaps — a valve that was never checked against the spout, or a print file that was never proofed on the substrate.
Samples before volume
A pre-production sample and fill trial expose fit and handling issues while they are still easy to fix.
Direct communication
English-speaking sales, clear drawings and one contact from inquiry to shipment.
Consistency after reorder
The approved sample and specification are retained so the next run starts from the same reference.
Company at a glance
Small enough to answer. Set up for export.
Our production base in Pingyang County covers the film, woven, paper and composite range, with the packing and documentation needed for overseas orders.
See quality & factory3,500 m²Production base
60+Team members
25MValve bags / year
4Material systems
Visit / contact
Come and see the line.
If you are visiting Wenzhou, we are happy to arrange a factory visit and a sample review. Send your travel dates and the products you would like to see.
Factory address
No.88, Changxing Road, Xiaojiang TownPingyang County, Wenzhou City
Zhejiang Province, China
Monday–Saturday, 08:30–18:00 (GMT+8)
Open in Google MapsWork with us
A new bag, a reorder or a second source.
Send the specification or a sample of the bag you use today. We will tell you what we would change, what we would keep and how we would price it.