Zhengyuan Valve Group Co., Ltd., based in Wenzhou’s Longwan District, has steadily advanced its manufacturing capabilities with a focus on heat treatment technologies, including bright annealing and intelligent process control. The company applies these technologies to enhance the surface quality, corrosion resistance, and structural integrity of its forged steel and cryogenic valves, which serve petrochemical, power, and natural gas sectors [citation:1]. Bright annealing, typically conducted in a controlled atmosphere, helps reduce surface oxidation and improves material performance without the need for post-treatment acid pickling. Zhengyuan integrates intelligent monitoring systems into its heat treatment processes to ensure temperature uniformity and process stability, supporting consistent product quality. This practical approach to process modernization reflects the company’s commitment to reliable valve solutions and steady operational improvement, aligning with its traditional, quality-first manufacturing philosophy.