Qingdao Zhongbo Steel Structure Co., Ltd. is specialized in manufacturing steel and color steel housing and the surrounding envelope products. Our company has been engaged in the steel works and the surrounding envelope manufacturing industry for nearly 20 years. We have developed into a specialized company integrating production, sale, design and construction, with annual sales of over RMB1 billion. Our main products are anti-corrosion steel series, color steel composite sandwich panel series, CZ steel series, activity room series, solar photovoltaic roof systems and steel structure...