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".
Read More >>>
Products
Blog
How to Choose the Right Degassing Valve Installation Method for Coffee Bags
30 Oct 2026This 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 2026One 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 2026VM-04 is upgraded to VM-04 PRO with 150mm/200mm depth options and touch-activated pressing for greater flexibility and safety.