Shanghai Haiheng Electromechanical Instrument Co., Ltd. is a research and production enterprise that produces water detection instruments and laboratory instruments. Under the leadership of inventor Wang Zhiwu, the company has been carefully crafted and repeatedly tested for over 20 years, finally obtaining multiple national authorized patents and striving to build an excellent brand for water quality testing (registered trademark: Water Expert). Haiheng is committed to inventing and innovating, making the world fall in love with Chinese made products. Its core products: 1. XZ-0178 full Chinese color touch screen multi parameter water quality detector, with multiple patented technologies, can measure tap water, sewage, and circulating water with one instrument. It combines the advantages of chemical method and electrode method, and can measure 78 parameters. 2. XZ-0139 sewage multi parameter water quality detector, fully Chinese, color touch screen, with printing USB、 Historical data query can measure 39 parameters, including sewage detection items such as COD, ammonia nitrogen, total phosphorus, suspended solids, total nitrogen heavy metals, etc. 3. The G20 fiber optic heavy metal water quality detector can detect various heavy metals such as mercury, cadmium, lead, copper, nickel, iron, manganese, total chromium, hexavalent chromium, etc. It is portable and easy to operate without the need for professional technicians, and can be used as a substitute for atomic absorption spectrophotometers. 4. The YD20A/300A water hardness tester adopts the electrode method and mathematical approximation principle, with high instrument accuracy and no need for titration method. It is easy to operate and use. 5. CODMN-2AZ permanganate index meter (also known as manganese COD meter), portable, lithium battery, waterproof grade IP65, intelligent digital display, no titration method, easy to operate and use. 6. YGCY-1 UV oil analyzer can measure vegetable oil, mineral oil, and total oil without the use of carbon tetrachloride, does not damage the atmosphere, is environmentally friendly, and meets the product standards specified by the Ministry of Ecology. 7. HZX4000 high range online laser turbidity meter, surface scattering without cleaning, strong laser light source signal, long service life, detection range up to 4000NTU! 8. QXC-30 fully automatic colony counter, Chinese menu, using AI image recognition technology, one click automatic counting, no need for manual tedious detection, counting up to 999! 9. ZXSD-1 online clear water colorimeter, fully enclosed LED sensor, with a lifespan of up to 10 years, advanced waterway structure, stable and practical instrument! 10. The CL-18 online colorimetric residual chlorine meter continuously measures residual chlorine in water, with strong anti-interference ability, long service life, and high accuracy. 11. The ZX-BL model continuously measures the magnification of sewage chromaticity using a magnification method colorimeter, with high automation, mechatronics integration, and automatic cleaning function. In addition, Haiheng also has multi parameter water quality analyzers, ammonia nitrogen detectors, total phosphorus detectors, suspended solids detectors, heavy metal detectors, total nitrogen detectors, water purification detectors, aquaculture detectors, hospital specific residual chlorine meters, swimming pool water quality detectors, sludge concentration meters, automatic titrators, urea detectors, water quality rapid testing boxes, vacuum chlorination machines, bacterial filters, turbidity detectors, portable residual chlorine meters, wastewater colorimeters, portable chlorine dioxide meters, fluoride ion meters, chloride ion meters, water hardness meters, calcium ion meters, COD meters, BOD meters and other products, which are widely used in university laboratories, waterworks, sewage treatment plants, purified water plants, disease control centers, hospitals, aquaculture, swimming pools, etc. Environmental protection industry, water conservancy bureau and other industries.