GB/T 5230-1995 Electrodeposited copper foil

GB 5230-1985

GB/T 5230-2020 Electrodeposited copper foil for printed board

GB/T 4722-1992 Test methods for copper-clad laminated sheets for printed circuits GB/T 4722-2017 Test methods for rigid copper clad laminates for printed circuits board GB/T 4723-1992 Phenolic cellulose paper copper-clad laminated sheets for printed circuits GB/T 4723-2017 Phenolic celluloss paper copper clad laminated sheets for printed circuit GB/T 4724-1992 Epoxide cellulose paper copper-clad laminated sheets for printed circuits GB/T 4724-2017 Composite base copper clad laminated sheets for printed circuits GB/T 4725-1992 Epoxide woven glass fabric copper-clad laminated sheets for printed circuits GB/T 4725-2022 Epoxide woven glass fabric copper-clad laminated sheets for printed circuits GB/T 5121.1-1996 Copper and copper alloys—Determination of copper content GB/T 5121.1-2008 Methods for chemical analysis of copper and copper alloys—Part 1:Determination of copper content GB/T 8888-2003 Wrought heavy non-ferrous metal products-Packing,marking,transporting and storing GB/T 8888-2014 Wrough heavy non-ferrous metal products-packing,marking,transportation,storing and cetificate of quality