Dispela standet i kamap bihainim ol standet bilong Saina nau long kemikel komposisen bilong kopa na kopa aloi smelting na prosesing prodak, em GB/T468-1997 "Copper Wire Ingots for Electrical Use", GB/T3952-1998 "Copper Wire Electrical Use", GB/T467-1997 "High-purity Cathode Copper" na "Standard Cathode Copper", na GB/T5231-2001 "Processed Copper and Copper Alloys" Bes long "Chemical Composition and Product Shape", ol namba wan nesenel standet GB/1919196 Ol Rot bilong Skelim Kopa na Kopa Aloi" na GB/T13293-1991 "Ol Rot bilong Skelim Kemikel bilong Hai-Puriti Katod Kopa" i bin senis gut. Ol i yusim ol gutpela teknik bilong skelim ol samting we i gat marasin nogut long en, na ol i yusim 'hydride generation' - non-dispersive atomic fluorescence spectrometry long senisim 'catalytic oscillopolarography' bilong painimaut 'arsenic', antimoni, 'selenium', 'tellurium', na ol narapela samting. Ol i kamapim 7-pela nupela 'analytical' rot, na tu, ol i yusim 'reductive' 'coupled plasma atomic emission' rot bilong skelim 'spectrometry' na rot bilong skelim 'mercury', na ol narapela samting.
