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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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.

How to Choose the Right Degassing Valve for Different Coffee Packaging

27 Jul 2026

This article explains how to choose the one way degassing valve for your coffee packaging application.

Why Degassing Valve Quality Matters in Coffee Packaging

30 Jun 2026

One way degassing valves are a crucial detail in coffee packaging that cannot be ignored, as they can directly determine the flavor of the coffee and the brand reputation.