GB/T 20991 section 5.5 and 5.8, GB/T12017, ISO 20344 section 5.5 and 5.8, AS/NZS2210.2 section5.5 and 5.8, EN12568 section5.2.3 and 7.2, EN 344-1 section 5.4 and 5.6, EN 388 section 6.4, BS-953 section 5, ASTM F2412 section 6 and 11, ASTM F2413 Section 5.2 and 5.7, NOM-113-STPS-2009 Section 8.4, CSA Z 195-2 section 5.3.1, ISO 20345
