China Erf Metal Structure Co., Ltd. is the leader of profile steel industry, which is specialized in producing cold-formed "C, Z, U, H" profile steel, we owns the world's advanced technology, Tianjin Erf Metal Structure Co., Ltd is the subsidiary company of China Erf Metal Structur Group, we have many years manufacturing and technical experience, there are many excellent engineers and an excellent business team in our group, it is the most professional manufacturer in various profile steel. Erf Metal Structure has got the ISO 9000 quality certificate, CE certificate, various quality certificates and many certificates of honor issued by Chinese government.