CSK is an enterprise manufacturing facility to safety supply the high purity liquid chemicals used in the semiconductor process for manufacturing facilities and scrubbers to purify harmful gases from the semiconductor manufacturing process.

CSK, aiming to be the global leader, was established as the joint venture of Hanyang ENG of Korea, TOMOE SHOKAI Co.,Ltd. of Japan in 1997.

CSK, secured about 20 technology patents accepted in 7 foreign countries including Korea. CSK successfully completed a variety of national projects including a next generation key environmental technology development project and next generation eco-innovation technology development project.