En-Door is the earliest and largest manufacturer of Methyl Tin Mercaptide(National Patent CN1077196A) in China. We have advanced DCS automatic-control production line with annual capacity of 10,000 tons.

CPE production line adopted advanced 40m³ enamel reactors and Hastelloy centrifuges from Pfaudler Werke GmbH Germany with annual capacity of 60,000 tons.

Acrylic Processing Aids and Acrylic Impact Modifiers production line is now the most advanced one with annual capacity of 10000 tons in China.

PVC production line(carbide based resin) adopted the technology and facilities from Chlorine Engineers Corp., Ltd. Japan with annual capacity of 250,000 tons.

We own a lot of advanced apparatuses including Fourier transform IR spectrograph, gas chromatograph, high pressure liquid chromatograph rheometer, polymer testing equipment etc.