... , especially for the demanding heat-sensitive products, and strong heat evaporates the foam material, ... natural colors, flavors, fragrances, enzymes, yeast flavoring, lactic acid, xylose, starch, sugar, enzymes, potassium sorbate;Day ... acid ester;Synthetic: PTA, DMT, carbon fiber, poly-tetrahydrofuran, polyether polyols, etc.Petrochemicals: TDI, MDI, trimethyl hydroquinone, the three hydroxyl grade ...