m-suturing submerged-arc welding center, straight flange welding machine, nc torch cutting machine, 6-shaft nc tube intersection-cutting line, large drilling machine, pp103 automatic connecting plate production line, hydraulic nc 3-roll plate bending machine. D)certificate:certificate for qualification of construction enteprise, corporate code certificate, business license, credit rank certificate, permit for production of industrial products, permit for production of industrial products, certificate of honor from china unicom, excellent iron tower provider of china unicom, quality management system certification, permit for safety in production, member entity of corporate credit association of qingdao, contract-abiding and promise-keeping enterprise, cqm certification. D)products:steel tower and steel structure. E)experiences: Dar-es-salaam radio & tv tower of tanzania Dar-es-salaam radio & tv tower of tanzania is a quadrangle guyed tower with three layers of guy wires and three working platforms. Tower height: 130m Completion date: 2009.8 Shaoxing municipal radio & television tower in zhejiang province According to customer