... Design according to customer's requirement. 2) Manufacture with high quality control. 3) Engineer helps to instruct installation. 4) ... H beam/C purlin/Z purlin/sandwich panel/ corrugated steel sheet 6)Life: Over 50 years 7)Nice appearance ... structure building sales:North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe Prefab Steel Structure ...