Xi'an Jiecheng Instrument Co., Ltd., founded in May 2011 and located at No. 9 Xingqing South Road, Beilin District, Xi'an City, Shaanxi Province, is a laboratory instrument manufacturer integrating R & D, production, design and sales. At present, it has independently developed 9900z sealer plus program-controlled constant volume sealing machine, NTU Series Portable turbidity meter, shuizhiyuan series ultra pure water machine, ultra clean series ultrasonic cleaning instrument, intelligent integrated distiller H836 series constant temperature and humidity weighing system, BOD detector, ultraviolet visible spectrophotometer, micro oxygen demand generation system, portable water quality heavy metal detector, digestion instrument and other laboratory instruments have passed CE certification. Now it has obtained one national invention patent and six utility model patents. In 2017, it was awarded the title of private enterprise in Xi'an. In the same year, the enterprise passed the ISO9001 quality management system certification. It is widely used in instrument dealers, environment, disease control, physical and chemical, tap water, government testing institutions, testing companies and other industries.