... ISO 4422, ISO 3633, IEC 614, GY 3050) All Lipson PVC pipes and fittings are approved and certified by the National ... for convenient forklift handling and load shift control.All Lipson PVC Fittings are available in either Grey or Ivory White in ... colour Certificate :ISO9001 TUV-SUD D&B Contact UsLipson(Xiamen)PVC Pipe Co.,LtdTel:86-592-6683188.....................................Building Asia Since 1970