H-beams,I-beams,Flat bars,round bars,wire rod, square bar,galvanized plate,coils,etc....

all kinds of aluminum alloy extrusion products round bars, square bars, seamless tubes, angles, extrusion profiles, etc., special drilling tools for oil and gas wells, coring tools, core bits, etc....

15F, Yuanhe Building, No. 300, Yixian Road, Shanghai, Shanghai, China

Longna Corporation was established in 1989. After more than 21 years of development, we have had 10 subsidiary companies. Our head office is Shanghai Longna Corporation. Longna is a large collectivize...