... industry, dyeing industry, environmental protection etc. Especially suitable for food industry, sweetening agent such as cane sugar, ... glutin, essence and spice, activated clay etc.Also used for chemical ntermediate, cystine, glycerin, itaconic acid, optical brightener ... 1999 orGB/T12496-1999.For external standard, refer to ASTM standard for activated carbon & AWWA standard for activated carbon.Packing: ...