... Export ability,Q345B or Q235B material. Q345B or Q235B material.Steel Structure Building Project:Design & Manufacture & Export ability,We have ... Guangzhou), is the member of China Steel Construction Society,the leading-producer of steel structure over 16 years,our projects, ... , For roof and wall; Galvanized color steel sheets, For roof and wall;(Galvanized) Steel pipes/bars/Tubes etc.;Flatbed & Cutting ...