| 1964 |
February - The company was founded and set up in Taipei City, and set up plant in Tou Fen Township, Miaoli County, to produce PVC powder and PVC pipe, film, and leather. |
| 1968 |
May - Panama Gulf Oil Company formally invested in the Company to introduce new production technology and management system. |
| 1970 |
January - The Ministry of Economic Affairs initiated the joint venture between the company, CPC Corporation, Tai-Chien, Formosa Plastics Corporation,
Cathay Pacific Plastics and Yee Fong Chemical & Industrial Co. Ltd., and set up Taiwan VCM Corporation,
which plants in Kaohsiung and Tou Fen to manufacture of vinyl chloride monomer (VCM) and supply raw materials for domestic PVC (PVC) and its processing industry. |
| 1973 |
March - The Company's shares were approved to be publicly traded on the Taiwan Stock Exchange. |
| 1982 |
May - The Company was transferred to Panama Merchants Asia Private Investment Corporation for the ownership of the Company by the change of business strategy of Panama Gulf Oil Company. |
| 1986 |
November - BTR Nylex Limited acquired a 31% stake in the Company and transferred the share to its 100% owned subsidiary, BTRN Asia, in December of the same year. |
| 1988 |
June - Company set up CGPC America Corporation in the United States, to strengthen the business in the Americas to promote international products. |
| 1994 |
Passed the International Quality Assurance System (ISO-9002) certification, effectively improve product quality. |
| 1997 |
March - BTRN Asia, which owns 31% of the shares of the Company, was transferred to Bermuda Fiji Guinea Co., Ltd.,
which is a joint venture between USI Corporation and UPC Group jointly formed by the overseas holding company.
June - the Ministry of Economic Affairs approved the approval of the Company through the third region in the mainland of Guangdong Province,
Zhongshan City, invest in the establishment of China Plastic (Zhongshan) Co., The resolution of the Board of Directors of the Company was dissolution on October 24, 2011,
the procedure was not completed yet. |
| 1998 |
June - Passed the Environmental Management System (ISO-14001), to enhance the quality of environmental protection and reduce waste. |
| 2009 |
May - The Company set up 100% shares of CPGC Polymer Corporation in Kaohsiung to build a PVC powder plant.and began its official operation in February 2012.The annual production capacity of PVC resin has been increased from 180,000 metric tons to 350,000 metric tons through consolidation.
|
| 2012 |
February - CPGC Polymer Corporation began its official operation. |
| 2015 |
November - VCM annual production capacity increased from 420,000 tons to 450,000 tons; PVC resin annual production capacity increased from 350,000 tons to 400,000 tons.
|
| 2018 |
February - PVC film/sheet new production line began its operation and the annual production capacity was
raised to 72,000 tons from 68,000 tons.
August - PVC resin annual production capacity was raised to 410,000 tons from 400,000 tons.
|
| 2019 |
June - VCM annual production capacity was raised to 485,000 tons from 450,000 tons.
September - PVC resin annual production capacity was raised to 430,000 tons from 410,000 tons.
|
| 2020 |
January - PVC resin annual production capacity was raised to 450,000 tons from 430,000 tons. |
| 2025 |
April - PVC resin annual production capacity was raised to 470,000 tons from 450,000 tons. |