Physical:white,light yellow or brown grain  Usage: mainly used in photographic paper, fixature and galvanoplastics liquid, match and wooden furniture.  Storage: It should be kept dry, clean and even place without impurities.  Capability:It can pass the 4mm aperture standard sieve. Others:the product is under the QB/T1995-94 national trade standard. We can handle the SGS, ITS quality certificate and CIQ veterinary sanitation certificate and the note for changing the certificate of letting pass. Base on ourown factory and lots of fresh materials near by us,we have a great advantage on price,quality and punctual delivery time.     If u r interested in our products,please don’t hesitate to contact me,we’ll reply u ASAP and try our best to cooperate.