Qihong Plastic Products Co. Ltd Product List One-Way Degassing Valve (XMSJD) One-Way Degassing Valve (XYSJD) One-Way Degassing Valve (YSJM) One-Way Degassing Valve (XMSJM) One-Way Degassing Valve (XYSJM) One-Way Degassing Valve (RSJM) One-Way Degassing Valve (RSJQ) One-Way Degassing Valve (RSPT)