Sumitomo is looking to make an additional investment of around $1.8bn to construct a new plant for compound resin to make digital consumer electronics and automobiles by 2012, according to a Japanese newspaper.
The two firms will launch a feasibility study on the new plant by spring 2008 with plans to begin construction in 2009.
The two firms have already initiated a second phase expansion of the $10bn complex.
The project, which is estimated to be as big as the first phase, involves the expansion of the existing ethane cracker and aromatics complex, and the construction of at least 15 downstream chemical production plants (MEED 26:10:07).