Our company started in 1996 as joint venture company among CH Auto Parts Co., Ltd., a leading auto parts supplier in Thailand, Sumitomo Corporation, a leading Integrated Trading Company in Japan, and UACJ Coporation, a leading Aluminium Producer in Japan. Therefore, two initial “CS”, came from the first alphabet of CH Auto Part Co.,Ltd. and Sumitomo Corporation.

After 22 years operation, our shareholders agreed that CH Auto Parts Co., Ltd.purchase all Japanese shares and become 100% shareholder of our company from begining April, 2019.

Today, our company CSN still succeed the spirit and mission of this J/V company, and we always try be the best supporter to our customers through supply of most confirming materials.

Till today, according to customers needs, we introduced new lines of production one by one as below,to match with precise slitting for thinner thickness, narrow widths and critical surface slitting. Such historical efforts brought us our flexible proposal for difficult slittings. Actually we slit with minimum thickness of 50 micrometer with minimum width of 8 mm. for Aluminium, Copper, Stainless Steel and other specialty steel coils and sheets.