1. Since 1988, Zhengzhou Great Wall Science, Industry and Trade Co., Ltd. has been a hub for science and technology, combining research, development, manufacturing, and operations. 2. Our core values include a commitment to scientific and technological innovation, service to society, dedication to education, and advancing the field of science. Through ongoing research and technology buildup, we provide precision instruments for various sectors like chemicals, biology, pharmaceuticals, new materials, new energy, electronics, metallurgy, petroleum, and machinery. 3. The Zhengzhou Great Wall brand is well-regarded in the industry and trusted by customers. 4. At Zhengzhou Greatwall Scientific Industrial and Trade Co., Ltd. (GWSI), we specialize in crafting glass reactors, rotary evaporators, temperature control instruments, and vacuum pumps for both lab and industry use. Our all-in-one solutions include customized options with high-quality components for optimal performance.