Wenzhou Sanhuan Rubber & Plastic Products Co., Ltd. develop and design complex type decompression valve film and get the nation patent (patent No.is ZL2004 2 0091635.9）
The president of Wenzhou Sanhuan Rubber & Plastic Products Co., Ltd.-Mr. Jinwen Zhao is engaged as expert consultant by Chemical and Material Engineering College of Wenzhou University.
Carburetor rubber parts has successive 5 years occupied the 50% of the market
