... /Q345 Easy to install,fire proof,good insulationPlace of OriginZhejiang, China Standard GB,ASTM,DIN,JIS,BS,AISI Type Heavy Duty ... of B/L Validity of quotation 15 days Transportation by truck/vessel in bulk or container Welding Testing Ultrosonic, X-ray ... contact us . Expert Manufacurer Prefab Modular Light Steel Structure Factory from China