Huazhong Precision Machinery Co., Ltd. develops and produces piston products for various types of fuel engines for vehicles, with an annual output of over 50-60 million units. At the same time, it has established friendly cooperative relationships with domestic and foreign power locomotive brands. It is a powerful precision enterprise in the industry. Years ago, due to product development and quality inspection needs, we approached Haiyi Technology and requested a portable nitrogen detector. Their new product development involves the production and manufacturing of nitrogen, which requires a nitrogen generator to continuously produce ammonia gas for bottling, storage, processing, and utilization. Among them, it is necessary to test the purity of ammonia gas in the ammonia cylinder to determine the performance and efficiency of the ammonia generator. Communicated with the technical personnel in charge of the project in the company to understand their needs and budget requirements, and provided them to the engineerZT400-N2Portable nitrogen detector model. After receiving the instrument, the engineer found that they were not very good at using it. Later, we provided after-sales support, and for after-sales, we would communicate through phone, internet, and video to help customers solve their doubts and difficulties. The ammonia detector is also a type of gas detector that we commonly produce,ZT400The machine model is also an instrument that can withstand the test of time.