Sigma HongKong LTD established in 2005, It's an earlier professional manufacturer engaged in membrane structure stadium, steel structure stadium, exhibition steel construction building, airport membrane structure, airport steel structure, railway station steel structure, steel bridge, high building steel structure; air domes stadium; air domes industry; We are an earlier membrane structure and steel structure in the design, construction and obtaining the qualification of large enterprises in China. Business in the membrane structural engineering design, processing, production, installation, maintenance, and purchase and sale of such film material. Long Term collaboration with famous brand Ferrari(France),Saint-Gobain(USA),China Top brand ; We finished more quantity,high quality,large-scale and big size project; Recently we finished Zambia Lusaka stadium ,the size more than 50,000 square meter; ShangHai World Expo membrane structure size more 60,000 square meter; The 26th world Universiade bicycle game stadium steel structure, the size more than 16,000 square meter; Southeast Asia games stadium, the size more than 15,000 square meter; ShenZhen OCT park , the steel structure and membrane structure size more than 50,000 square meter; HuNan Olympic park stadium , the size more than 12,000 square meter etc; We finished more than 150big project membrane structures and steel structures, the total size get more than 2,000,000 square meter; We try our best to do better, we need assure our each step will be satisfied by each client, We bring in the most advanced design and research concepts to make sure we provide our clients with state-of-the-art products. Our achievements are inseparable from the support and encouragement of our customers and partners. We will and always tireless and enterprising to become your most sincere and the most trusted partner forever.