How a Laser Hallmarking Machine Places the 6-Digit HUID Number on Jewellery?
The 6-digit HUID number is engraved on jewellery by a laser hallmarking machine. It is not just a matter of marking a visible mark on a gold article when you get it hallmarked. The hallmark must be clearly visible, durable, properly placed, and small enough to fit on jewellery when the space available for marking […]
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