Zhengzhou Greatwall Scientific Industrial and Trade Co., Ltd. (the former Great Wall, zhengzhou instrument), founded in 1988, has been passed 20 years history, is a collection of research, development, manufacture, operation for the integration of technology innovation enterprise. Now, the company's products throughout Asia, Europe and America, covering domestic most laboratory, zhengzhou wall group.it has become the most popular and reliable brand. After long-term research and development of technology, has accumulated ceaselessly in chemistry, chemical, biological, pharmaceutical, polymer engineering field has made great development, research and development of the circulating water pump manufacture, multi-purpose coolant pump, low temperature mixing reaction bath, airtight colding &heating cycle device, rotating evaporator, glass reaction kettle, set the heat temperature magnetic-driving bath, digital dc stepless speed mixer, glassware fast drying, vacuum drying oven, digital electric heating of more than ten series more than 100 types of test instruments and equipment. Among them, circulating pump type multi-purpose temperature and cooling fluid circulation pump is the landmark product, has long been leading the industry development. Company with technology innovation, social service for the purpose, actively research and develop new products, dedicated to science and education. Company in the domestic industry enjoyed a high reputation, first passed ISO9001 international quality system certification. The bank's education programs, normal education development projects in the public bidding for the bid. It has been recognized by the high-tech enterprise in henan, Successive years by provincial, city "creditable enterprise", High quality product brand enterprises in henan province, Henan technical supervision bureau awarded "quality tracking enterprise" key, Henan product quality supervision, inspection and awarded "product quality trustworthy unit", China's market monitoring center was awarded "China's trustworthiness, guard contract, heavy quality model enterprise", Zhengzhou technical supervision bureau awarded "quality, measurement trustworthy unit". Company prestige, abiding by contract, with high quality, excellent performance products and perfect after-sale service wholeheartedly for education, science and industry development services.