ESK(Eco services Korea) is the largest manufacture for cupric oxide(CuO, Min 99%) in South Korea.
Our yearly production is approximately 2,000~3,000mt. Based on iso14001 and OHSAS18001, We have exported our goods to all over the world ( China, Taiwan, Hongkong, Newzealand, Austraila, EU and so on ) since 1994.
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