... is used for waste oil and other liquids distillation,to clear the colour, eliminate odour and remove sludge Thin film evaporator has been used ... acid ester.Composed fiber: PTA, DMT, carbon fiber, poly-tetrahydrofuran and polyether of polyhydric alcohols, etc.Petrochemicals: TDI, MDI, trimethyl-hydroquinone, trioxylmethyl ...