Qingdao Chengkang Chemical Co., Ltd. was founded in 2004, and it specializes in production Trichloroisocyanuric Acid,Sodium dichloroisocyanurate ,Cyanurci Acid, ammonium sulfate .We now produce 30,000 tons of Trichloroisocyanuric Acid and 20,000 tons of Sodium Dichloroisocyanurate and 50000Tons ammonium sulfate granular each year. Our products are highly preferred by customers for reliable qualities and reasonable prices. Above 90% of our products are exported to Japan, Korea, Southeast Asia...