WE CAN OFFER YOU WITH HIGH QUALITY AND REASONABLE PRICE AS FOLLOWS: CHEMICALS: ZINC OXIDE(CAS#1314-13-2), Levulinic acid (CAS#123-76-2) DL-METHIONINE(CAS#59-51-8), Gamma-Valerolactone(CAS#108-29-2) AIBN(CAS#78-67-1), Diphenolic Acid(CAS#126-00-1) GUM ROSIN(CAS#8050-09-7), Dimethyl Disulfide (CAS#624-92-0) AMMONIUM BROMIDE(CAS#12124-97-9), MethaneSulfonyl Chlorid (CAS#124-63-0) ZINC CHLORIDE(CAS#7646-85-7), Methanesulfonic Acid 99% 70%(CAS#75-75-2) SODIUM TRIPOLY PHOSPHATE(CAS#7758-29-4), Sulfolane (CAS#126-33-0) DSD-ACID(CAS#81-11-8), Pyrophosphoryl Chloride (CAS#13498-14-1) CYANURIC CHLORIDE(CAS#108-77-0), Succinic Anhydride (CAS#108-30-5) Chlorosuccinimide (CAS#128-09-6), Bromosuccinimide (CAS#128-08-5) Pyromellitic Dianhydride (CAS#89-32-7), Pyromellitic Acid (CAS#89-05-4) Mesitylene (CAS#108-67-8), Glutaric Anhydride (CAS#108-55-4) ETC.