En-Door Polymer Additives Co.Ltd, formerly named "Nanxing" was
founded in 1987. The company is one of the largest manufacturers in
China that specializes in researching, developing and manufacturing
of PVC auxiliary, including PVC heat stabilizers, PVC processing
aids, PVC impact modifiers and PVC lubricants etc.
En-Door has more than 2500 employees, including two R&D centers
with 156 people. It is located in the city of Yichang near the
Three Gorges Dam, and it is a half an hour drive from the Yichang
Airport to our factory.
Within more than 20 years of fast development, we have been given
many awards such as "the State Scientific & Technical
Achievement Award" and "Consumers Satisfying Products"by the
1987.11——Foundation of Chemical General Factory Nanxing Hubei.
Technical cooperation with Beijing Research Institute of Chemical
Industry for Methyl Tin.
1996.12——Achievement of 2000 tons/year capacity.
Certification of Non-toxic(Methyl Tin Mercaptide) for
pharmaceutical and food package by GB9685-94.
1998.8——Obtained ISO9001 certificate.
Nominated for superior technical company by Hubei Science &
2002.2——Achievement of 5000 tons/year capacity of Methyl Tin
Started to export, established favorable relationship with overseas
2003.9——Obtained ISO9001: 2000 certificate.
Designated as the credit Grade "A" corporation by the bank of
2004.8——Purchased the Plastic Auxiliary Factory Hangzhou Zhejiang
2004.12——Foundation of Hubei Nanxing Polymer Additives Co., Ltd.
with five factories, two research centers and Yichang Huaqi trading
2009.3——Foundation of our Hong Kong branch Prominent Future
2010.10——Renamed the company as En-Door Polymer Additives Co.Ltd.