QingJi technology is a professional company who mainly design and produce lifting products, include hand push mast, winch up mast, portable tower, cell on wheels, truss lifter, endzone camera.Products are mainly used as: antenna, telecom, wifi, outdoor lighting, stage application, wind testing, top load range from 5kg to 500kg, height from 3m to 30m.we also deal cooper collar, cooper bearing, brass socket, it is use the method of weld the cooper on steel.
