SCC held seminar for recycling waste refining catalysts recently. The participants discussed in detail the feasibility and economic efficiency of recycling the waste catalytic cracking catalysts, the residues of rare earth in production and the precious metals such as cobalt, molybdenum, tungsten and nickel in the waste hydrogenation catalysts. The participants also exchanged views on social responsibilities of the enterprises, reached common understanding on major issues and work arrangements in the near future.