"Longyou European friends of mechanical and electrical technology co., LTD. " originated in 1995 started in the field of industrial door "Witt mechanical and electrical technology co., LTD. ", in 2013 through detailed market analysis, integration of the original quality resources, the company of all absorbed in the same industry at home and abroad successful management and marketing idea, and, as new production equipment and excellent research and development, management and sales staff to join, set up "the friends". "The friends", heavy attack, with brand-new mental outlook to meet a new challenge after another. "Friends", dedicated to the production and sales of high-end industrial door market, products covered by the four categories of industrial door products: industrial sliding door, industrial sliding door and rapid rolling door. Steel doors, wind resistance and supplemented by fire doors, steel doors, unloading platform, brake, telescopic doors and other products. Company research and development strength is enough to provide a variety of customization industrial door products, help customers solve in the field of industrial door