http://pastport.jp/user/genvan ja-JP We are a professional manufacturer who is engaged in research, development, production, and sales of silicone rubbers for more than ten years. https://www.genvan.com/ 2022-11-25T11:11:00+0900 http://pastport.jp/user/genvan/timeline/Dongguan%20Genvan%20Silicone%20Technology%20Co.%2CLtd. genvan http://pastport.jp/user/genvan/timeline/Dongguan%20Genvan%20Silicone%20Technology%20Co.%2CLtd.