The GB standard is comprised of a suite of standards developed in China. The suite includes four levels of Chinese Standards; including National, Professional, Local, and Enterprise. The most widely implemented standards are the Chinese National Standards, also referred to as GuoBao Standards (GB).
The GB is a series of standards adopted mainly from the International Electrotechnical Commission standards (IEC) and the International Organization for Standardization (ISO).
The GB standards are enforced by laws and administrative regulations and are focused on the protection of human health, personal property, and safety. It is additionally used widely by labs and test centers in China to determine material performance. Though the GB is not a certificate, it is mandatory that certain products pass the examination to be deemed credible and the returning test reports are crucial in maintaining a product’s reputation in the market.
Kryton’s Krystol T1 and KIM have passed the GB standard for cement based penetrating crystalline waterproofing materials.
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NSF/ANSI Std. 61: Drinking Water System Components – Health Effects.