Since the foundation in 1981 Sejin has focused on the business of SMC products and FRP products only. As a front leader of this industry in Korea, Sejin dedicated our efforts continuously for new product development and quality improvements; and have secured the Korean industrial standard certification (KS F4806), WRAS certificate(UK), PSB(Singapore)' ISO 9001 certification, and GQ mark.

Sejin SMC Ltd. is a professional manufacturer of SMC water tanks for construction sites and industrial facilities; TMC sink bowls; top boards; chemical tanks for FRP plant construction projects; ducts; and covers.

Sejin pledges to continue to put forth the best R&D efforts to maintain the highest level of quality and defect free installation as the leader in the industry.