... 9001:2008, ISO 14001:2004. 4) Product range:a) Round tube and embossed tube : O. D. mm9 ... 168, 219 b) Square tube side length , mm : 10*10 , 12*12 , 15*15 , 18*18 , 19 * 19 , 20*10 ... ,10*24,11*24.5,13*22,12*23,12*24,15*25,15*30,10*33, ... 50 people d) Factory Size : 46,000 square meters)12) Trade & Marketa) North America b) South America c ... Term: T/T ,L/C ,D/P,D/A, Western Union 30% in advance ,The balance 70% ...