... : Best Ring Technology Co. , Ltd. Business Type: Manufacturer Ownership Type: Joint ventureRegistered capital: RMB 5 MILLIONCEO: Peter Song Year Established: 2002 ... Bushing, Rubber Boots, Rubber Tube, Polyurethane Products, TPU Products TPU, PTFE Seal, Molded Products Number of Employees: 301 - 400 People Number ... Test, Thickness Meter, Shore-A Hardness Tester, Optical Projector 2012 ptfe oil ring