Shanghai Yifa Stud Welder Engineering Co., Ltd. is a professional manufacturer and trading company established in 2006, specializing in advanced stud welding technology. Based in the Songjiang district of Shanghai, the company operates a dedicated production facility and maintains an independent R&D team focused on technological innovation. With a workforce of 11 to 50 employees and an annual revenue between US$2.5 million and US$5 million, the company has established itself as a leading supplier of welding solutions for steel structure manufacturing, composite construction, and heavy industrial applications.