Established in 1988ï¼?Colossus Group is the largest professional designer and manufacturer of mechanical seal and high-power magnetic drive pump in China. It consists of 6 branch companies. We have more than 1000 varieties, mainly include mechanical seal and seal auxiliary system, welded metal bellow seal, high-power magnetic drive pump and chemical process pump, coupling and precision casting. We have established long-term and steady supply relationship with Sinopec, CNPC, Dow Chemical, Ingersoll-Rand Group, Rhodia Chemical Group which all rank in the worldâ??s top-500 enterprises. We have occupied the largest share of domestic market in terms of sales turnover since 1995. In 1996, we gain the certification of ISO9002. In 2007, we received quality management certificate issued by American Petroleum institute (API), certificates of ISO14001, OHSAS 18001 and ATEX respectively.