Hash Corporation (HACH) was founded in 1947 and is headquartered in Loveland, Colorado, USA. It is a provider of water quality analysis solutions. The factories are located in the United States, Germany, Switzerland, France, and the United Kingdom, and have also established production bases in China. As a supplier of water quality and hydrological monitoring instruments, Hash Company's products are widely used by users in fields such as semiconductor ultrapure water, pharmaceutical/power and other industrial water purification, drinking water, groundwater, surface water, municipal sewage, industrial sewage, etc. Its full product line covers laboratory qualitative/quantitative analysis, on-site analysis, flow analysis testing, and online analysis testing. The product has the characteristics of precise measurement, reliable operation, simple operation, low maintenance, and compact structure. Hash Company has always been committed to making chemical analysis processes more convenient, efficient, and reliable. Especially the ready to use chemical reagent kits for various types of packaging not only provide reliable quality assurance for accurate chemical analysis, but also save valuable time and human resources for users. In order to be closer to the Chinese market, better meet the needs of Chinese users, and help more and more domestic users solve the problems they encounter in the field of water quality monitoring, Hash Company has started the localization of its products. While ensuring product quality, it has reduced many complex work processes, so that more customers can use Hash Company's high-quality products. Hash Company attaches great importance to the needs of Chinese users. Currently, products such as CODmax chromium method COD analyzer, 1900C portable turbidity meter, and DR1010 COD analyzer tailored for the Chinese market have been favored by a large number of users for their product technology and high quality. Localized production is becoming increasingly convenient for customers, shortening product delivery times and providing convenient and timely after-sales service support. Our goal is to continue providing reliable instruments, testing methods, simple operating steps, and better customer service to our customers, constantly improving the quality of our products to meet the ever-changing needs of our customers. At present, the company has established offices in Beijing, Shanghai, Guangzhou, Chongqing and other places to provide convenient, thoughtful and timely services to customers in China.