Qingdao Develop Chemistry Co., LTD. is a group of scientific research, production, sales, technical services in one of the comprehensive enterprises. Our company is the most reliable supplier with fully automatic production equipment and professional technology, with 19 years of exporting experience, so far, our products has been sold to more than 70 countries. We provide products of excellent quality and competitive price. The main products are Trichloroisocyanuric Acid (TCCA), Sodium Dichloroi