Tangshan Yunfeng Industrial and Trading Co. ,LTD (Macro Development ( China ) international Limited ) is one of the largest suppliers of structural steel in China since 2001, which are the market leaders with outstanding reoutations of supplying professional products in the steel market. The company is widely recognized throughout the industry with the strength of H BEAM, I BEAM, IPE, IPEAA, ANGLE STEEL, CHANNEL STEEL, STEEL SHEET PILE and so on,lots of products with international SGS and BV inspection certificate have been exported to many countries successfully such as Russia, Korea, Indonesia Vitenam, Myanmar, Kuwait, Bangladesh, Pakistan, Sir Lanka, Peru, Sudan, and Irap, etc, which helps to establish business reputations of the company both at home and abroad.