In 1985, TCL set up a small plant to recover Maleic Anhydride from the effluent gases of PA production.

In 1992 expanded manufacture of Maleic Anhydride to 10,000 TPA.

Set up TCL Malaysia in 1997, to produce Maleic Anhydride. With the n-Butane Project commissioned in 2008 increased the total capacity of Maleic Anhydride to 60,000 TPA