... available chlorine in the product, for example, ithas a wonderful disinfection for swimming-pool, drinking water, cooling tower&sewage ... precautions listed for the product.Tianjin Zhoushang Import and Export Co., Ltd. serves as both industry and tradecompany. Our main ... available chlorine in the product, for example, ithas a wonderful disinfection for swimming-pool, drinking water, cooling tower&sewage ...