Rokem, founded in 2000, an IALA industrial member, is a professional suppliers of AtoN products in China. Its product scope includes various buoys, lanterns, light towers, solar panels, racon and remote monitoring system etc. Our products have been applied to most coastal area, rivers and lakes in China. Especially remote monitoring system, we have occupied more than 90% market share in China which is approved to be a safe, reliable and low-running-cost system. Meanwhile, we are the only producer of rotationally-molded PE buoys in China with diameter from 1500mm to 3000mm as well as side scan soner (SSS), echo sounder etc in China. 　 We have also exported to other countries in the world including U.S., Indonesia, Korea, Australia, South America, Africa etc. We have received many patents and awards, among which Liu He Kou project on Yanzi river is listed as a model project by the Ministry of Communications of China.