CSM is Woongjin Chemical's product brand for RO, NF, UF membranes and micro-filters. Woongjin Chemical, once a subsidiary of the Samsung Group, was first established in 1972 as Cheil Synthetic Inc. For over three decades, we have been a leader in the domestic synthetic and chemical fiber industries. Woongjin Chemical focuses in manufacturing high value added products through precision chemical engineering. Our company has imported collective manufacturing systems that connects the textile business unit at the Gyungsan plant with the polyester staple filber (PSF) processing line at the Gumi plant. For more details about the business operations at Woongjin Chemical, please visit www.wjchemical.com.Woongjin Chemical succeeded in its development of the reverse osmosis membrane in the early 1990s and was the first to accomplish it in Korea. Since then, Woongjin Chemical has expanded its business scope in the filter industry by developing filters for water purifiers, micro-filters and reverse osmosis membranes for industrial, municipal, commerical and residential water applications. Furthermore, Woongjin Chemical has directed its resources and management strategies towards advancing the environmental sciences and industries.