Company Description: Our main products include welded metal bellows mechanical seal and spring seal and seal auxiliary system, hi-duty magnetic drive pump, coupling, and precision casting. The products serve in the broad application of petroleum, metallurgy , pharmaceutical, electric power, paper-making, food, aerospace and navigation ect.Colossus Group received certificate of Spec Q1-2003 quality management issued by American Petroleum institute, certificates of ISO14001 environmental and OHSAS 18001 and ATEX |