we could offer a wide range of mechanical seals, oil (axis) letters, various types of industrial rubber products and sealing material (silicon carbide, graphite carbon, alloy, aluminum, filled PTFE).Longshen products are widely used in petroleum industry, paper-making, dyeing, food processing, pharmacy, living-things engineering, water treatment, reactor vessel, general industrial pumps, submersible pumps and marine pumps, gas engine, auto-cooling pumps and auto-compressor, cool machine. With well-equipped production and testing equipment and strong technical force，we are always emphasizing quality and service.The production and testing have been strictly done according with ISO-3069, DIN24960, DIN24250, API610, API682, NF EN12756, ANSI B73.1, GB656, JB/T1472 and JB/T5966 standards. ISO9001 certificated. Fast responding and best service with high quality products is one of our features Our aim is to be recognized as the best partner by our clients in providing customized programs,