... coating, PVDF, polishing, sand blasting, etc. Standard: GB/T5237-2004, Q/320281PDW01-2008Certification: ISO9001, ISO14001, CQMSpecification: According to your design drawings ... coating, PVDF, polishing, sand blasting, etc. Standard: GB/T5237-2004, Q/320281PDW01-2008Certification: ISO9001, ISO14001, CQMSpecification: According to your design drawings ...