About Wojin

Since its establishment in 2012, Wojin Plastic Products Factory has focused on the R&D and production of one-way degassing valves and semi-automatic valve applicator. It has brought in a fully automatic production line from Japan with a daily production capacity of 200,000 and a product qualification rate of 99.9997%. The company strictly controls product quality, strictly monitors each step of the product manufacture, and implements the 6sigma management. We guarantee the delivery on time and have 24-hour online customer support. Let our "coffee degassing valve retains the aroma of your coffee".
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How to Choose the Right Degassing Valve Installation Method for Coffee Bags

30 Oct 2026

This article briefly introduces the differences between manual and automatic coffee valve installation, and how to choose the appropriate installation method and equipment.

What is the difference between one way degassing valve and sticker valve

27 Sep 2026

One way degassing valves and sticker valves can be used for packaging that requires gas release, serving the same function.

VM-04 PRO A More Flexible and Safer Valve Pressing Solution

26 Aug 2026

VM-04 is upgraded to VM-04 PRO with 150mm/200mm depth options and touch-activated pressing for greater flexibility and safety.