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 Following the state's encouragement to develop industries such as resource conservation, repairing the old and recycling the waste, reducing costs and circular economy, the company has newly installed remanufacturing equipment such as laser quenching, laser cladding and plasma cladding surfacing in recent years, which has improved the market competitiveness of the company engaged in remanufacturing industry, solved the problems of difficult equipment maintenance and repair, long cycle and high cost for users, and achieved good social effects.