http://www.wis-chemicalmaterial.com/ COUNTRY WISDOM INTERNATIONAL LIMITED.,is a special calcium carbide factory which located in inner mongolia of China. The factory has only the right to produce in China, but no right to export.So we export with the company of COUNTRY WISDOM INTERNATIONAL LIMITED.The two companies are the same manager. We welcome all friends and business partners from all over the world to build business relation-ship with us.1-7mm Calcium Carbide made in China website:http://www.wis-chemicalmaterial.com/