Standardization Administration of China (SAC) has published the National Standard (G/TBT/N/CHN/680)on the 5th of October, 2009.

Articles 5.3.2.1 ~ 5.3.2.7, 5.3.2.9, 5.3.2.10, 5.3.3, 5.3.4.1, 5.3.4.3 ~ 5.3.4.7, 5.3.5 of this standard are mandatory, the rest are recommended.   Mandatory items are the terminology and definitions, classification,  requirements, test methods, inspection rules, signs, packing, transportation and storage of hydraulic control system and valve for coal mine hydraulic support.

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