LF (Xuzhou LF Engineering & Construction Co., Ltd. ) was established in 1994. Steel structure roof system is our main project, mainly including coal bunker, gas station, stadium, hangar, etc. LF owns the perfect process of design, manufacturing & construction. Our competitiveness arises from advanced engineering technology of spatial structures : Long-span: the structure can span up to 200 meters without internal pillars to maximize internal space. Fantastic: flexible structure, variable shape, large span & loading; fantastic appearance; eco-friendly; optimized minimum-consumed design. Long-life: durable materials & finishes (galvanized & stainless steel, composites, factory-applied finishes) for lower price with the same lifetime. Facilitated: fully mechanical / bolted joint leads to easy construction and low cost; considerate packing for transportation and assembly process.