in 1979 we installed the first chemical recycling system and increased efficiency to 98 %. in 1985 we introduced the first carat control unit which could make rapid carat control using potentiometric ...

1- )The silver proportion in gold scrap is checked. It should be less than 8%. 2- ) The thin parts are put into the titanium boiler. The thicker parts however should be melted first and put into water ...