Wei Cheng Instruments Co., Ltd. — 30 Years of Expertise, Quality You Can Trust Founded in 1993 as Wei Cheng Enterprise, the company initially specialized in OEM services, temperature and humidity equipment, as well as general maintenance. In 2012, the company expanded its operations and was renamed Wei Cheng Instruments Co., Ltd., focusing on the manufacturing of constant temperature and humidity test chambers and environmental testing equipment. We provide customized solutions tailored to customer needs, and our product range also includes high and low temperature chambers, ovens, salt spray test chambers, and constant temperature water baths.