With 10 years history, JJ Machinery is the largest manufacturer of roll former, roll forming machine, roll forming line, forming machine in Hangzhou, China. As a subsidiary, Our achievement in the Building Industry is based upon our commitment to quality, reliability, and precision. We are full service facility capable of offering ordinary products or designing them exactly according to customers' detailed requirement. From steel building machinery and steel building engineering projects to steel building material, we will take care of all your needs.