Carboxymethyl Cellulose (CMC).we offer food grade, Petroleum grade, Wash grade, Oil drilling grade , pharm grade Carboxymethyl Cellulose CMC.we offer food grade, Petroleum grade, Wash grade, Oil drilling grade ,pharm gradebuilding ... , petroleum field, paper making , cosmetics, textiles, contruction materials, and ect.The physical-chemical specification of CMC for Oil drilling grade are shown in ...