| 1948 | Site approved for production of chemicals |
| 1954-1972 | Production of lindane |
| 1957-1998 | Production of thioglycollic acid |
| 1959 | Start of pearlescent pigment production |
| 1971 | Start of inorganic chemicals production |
| 1975 | Water treatment plant comes online |
| 1976-2001 | Production of biotin (Vitamin H) |
| 1982-1991 | Production of Vitamin B6 |
| 1992 | Start of vapor deposition chemicals production |
| 1995 | ISO 9001 certification |
| 1996 | Start of crude silica gel production |
| 1999 | Expansion of pigment production |
| 2000 | Start of production of liquid crystal precursors |
| 2000 | ISO 14001 certification |
| 2002 | Further expansion of pigment production |
| 2005 | Capacity enlargement for liquid crystal precursors |
| 2007 | Capacity enlargement for crude silica gel |
