Profile: Shanghai Shengzao Mechanical & Electrical Equipment Co., Ltd. is a manufacturer of all types of cold press welding machines & matched dies, integrating development and production. Our main products include hand-held colder welder, desktop cold press welding machine, hydraulic cold press welding machine, all kinds of welding dies, metal defect mend cold welding machine, electro-spark mold welding repair machine, ultrasonic mold polishing machine, screw/tap extractor, and mold repairing machine.