... 4-butanediol, tetrahydrofuran, y-propyl, and many small manufacturing hydrogenated anhydride. items ValueContent ,%≥99.55Molten Color (Pt - Co), APHA≤ ... as "HongSanJiao"soda ash,"HongSanJing"caustic soda & PVC resin, Maleic anhydride, TD detergents, sodium metasilicate pentahydrate,etc. we have established sound ... logistic solution and the most efficient service after sale. Maleic anhydride 99.5%