... 2.ISO,CE,GOST approved 3.OEM and customise pipe connector, pipe fitting, accessories, tube connector,brass fitting,straight,elbow,tee,crossKey features:Material ... least 5-layer cartonCertificate: ISO9001/9002 ISO14001Advantage: high quality modest priceTUBOMART ENTERPRISE CO. LTD.Was founded in 2000, and we specialize in ...