The heroin instrument is of more than 30 types and consists mainly of a series of products such as cod, ammonia, total phosphorus, total nitrogen, bod detection instruments and national standard digestors, which have accumulated many years of experience in instrument development and application in the field of water quality testing. The instrument, which has a number of senior industry research and development engineers and a nationwide network of sales and after-sales services, is able to meet client needs in depth in new product development and after-sales services and is a good supplier of water quality detection equipment in the country。