as the biggest exportor of chemicals from china , we are very strong on triethylamine ,diethylamine ,fumaric acid , formic acid , phosphoric acid , stpp ,maleic anhydride ,pentaerythritol ,benzyl alcohol,dibasic ester, DMSO , propylene glycol ,propylene carbonate ,sles 70%,sebacic acid , chlorinate paraffin 70,MEK ,MEKO ,etc