Gold / Platinum tester GK GK series are the GOLD tester which evaluate the purity, from 9K to 24K in 10 seconds. Just measure weight in air, then in water. You will see the result at easy steps. Popular among gold buyers, jewelry ships, pawn shops, gold mine even some banks in some countries.


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AlfamirageJPshortclips [ Ссылка ]
AlfaMirageJP [ Ссылка ]

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