| 1999 | - Chi Mei establishes the Chimei Asahi Corporation through a joint venture with Japan's Asahi Kasei. The new company produces polycarbonate (PC) after testing and confirming a new, environmentally-friendly "non-phosgene, no solvent" method.
 - Founder Shi Wen-Long (Chairman of the Chi Mei Corp. at that time) receives the 4th Nikkei Asia Prize from Japan's Nihon Keizai Shimbun,Inc.. Shi was the first private individual to receive this honor, and was also the first resident of Taiwan to do so
 - Chi Mei Corp. passes ISO 14001 environmental protection certification
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| 1998 | Begins R&D and manufacturing of electronic chemical products |
| 1996 | Establishment of Zhenjiang Chimei Chemical  |
| 1995 | Begins production of (TPE) rubber products |
| 1994 | Chi Mei occupies the world's largest ABS plant (annual capacity exceeds 800,000 tons) |
| 1993 | Chi Mei Corp. receives ISO 9001/ ISO9002 quality certification |
| 1992 | - Receives Taiwan's 1st Corporate Environmental Award of Excellence in recognition of environmental performance
- Chi Mei Museum opens
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