DongGuan Huan Yuan Metal Products Company is a high-tech corporation which producing and selling the aluminous extension ladder. It has been the professional experiences in production and sale for six years and excellent workers. We have advanced production line and inspection system. Each product is inspected strictly by every working procedure. The quality is steadily and credibility and approved ISO9000. We also have strong scientific research and technology developing ability. We set the R&D and Lab centers in Shenzhen and factories in Dongguan and Guangzhou. Supplying the fast and excellent service to customers is our aim.Huan Yuan patent aluminous extension ladder takes comprehensive market & eximious reputation in the world and especially in occident and Asia etc. The first model patent aluminous extension ladder was recognized by the Occident and also passed SGS in Germany in 2002. We developed the lambdoidal and handrail extension ladders series basing on original single items to meet international requests.xxxxx is waiting for your kind e-mail