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COOLDO gold testing machines provide a fast and accurate method to determine gold concentration in jewelry and other precious metal samples.

http://www.cdoinduction.com/gold-testing-machine/ • Quality Control and Testing • 9 years ago •

This induction gold melting furnace from Cooldo combines advanced IGBT technology to achieve energy-saving and speed melting with a low fault rate.

http://www.cdoinduction.com/gold-melting-furnace/ • Industrial • 9 years ago •

Professional Induction Furnace Manufacturer & Metal Casting Machinery Manufacturer In China | CDOCAST .Get more details & order now.

http://www.cdoinduction.com/ • Industrial Equipment and Tools • 9 years ago •