Roller forming technology of high precision metal profile originates from Europe more than a hundred years ago. The product has the feature of high strength, high precision and fire resistance and it is wildly used in western world. However the technology and logistics barriers force the cost of producing to rise which holds back the popularization of such product in China. Vulcan introduces European technology and optimizes the design of steel profiles to meet the need of Chinese market and ensure the quality of the products and the same time. The optimized design allows the windows, doors and partitions to be constructed with only three variations of profiles which reduces the logistics and storing cost, gives the product a better look and finally makes the product stands out due to its high quality and low price.