... Hydropneumatic,Electronics,Powertools,Fire ,extinguishers ,Refrigeration Compressor in air conditioning, etc.3. Main products: O-Ring. ... mold fee is free.Company Name: Best Ring Technology Co. , Ltd. Business Type: Manufacturer Ownership Type: Joint ventureRegistered capital ... ,Elinsa YangStreet Address: No.426,Dengmin Road ,FengXian Shanghai ,ChinaBusiness Phone: 86-21-68127551 86-21-68127553Business ...