... .Certification:ISO9001. 2-1/2inch ss quick couplings F .Description: Welcome international order ,please attach the ... material/ballStainless steel 316/304TypeA,B,C,D,E,F,DC,DPCasting ProcessInvestment-CastingSurface TreatmentStain & Mirror PolishAdvantages1) ... quality control systems 4) Professional and considerate servicesCertificationsISO9001:2000, ISO/TS1649:2002, GB/T19001 and GJB9001A-2001Quality ...