Where do you sell sewage test kits in Xi'an?

Shenzhen Qizhiqiang Fine Chemical Co., Ltd. and Shaanxi Dongcheng Chemical Reagent Glass Instrument Store sells. Shenzhen Qizhiqiang Fine Chemical Co., Ltd. is located in Guangdong Province, Shenzhen City, Baoan District, the second industrial area of Huifeng Industrial Park, the company sells COD ammonia nitrogen and total phosphorus test kit, the price of 170 yuan a box, Shaanxi Dongcheng Chemical Reagent Glass Instrument Store is located in Xi'an, East Street 69, the company sells sewage rapid test kits, a box of 180 yuan. When buying sewage test kits, choose formal channels to buy, use them in strict accordance with the instructions, pay attention to safety and environmental protection.