Based on the environmental protect, Aimed at energy saving,quality improving, costing down for enterprise, Mr Yan Yongnong has owned several invention patent, and some of which has got the certificate. He cooperates with Ceprei Laborary laboratory to edit the<<Anti-oxidation Reducer for Solder Dross standard>>." The Anti-oxidation Reducer for Solder Dross""Recycling Equipment for Solder Dross on line" both of his design has the achieved the purpose for Green ,energy saving and pollution abatement.With the guide of Mr Yan,, KQXH won a high reputation both by the customer and the goverment.