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Gem Refractometers

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Gem Refractometers

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China Gem Refractometers Flashlight LED CL-181FL factory

Gem Refractometers Flashlight LED CL-181FL

Description FL means external LED with flashlight. Gem Tester Refractive index is one of most important optical parameter. Gloss of gem can be estimated by the parameter. The kinds of gem can be precisely ... Read More
2015-04-20 09:09:02
China Gem Refractometers Built-in LED CL-181BI factory

Gem Refractometers Built-in LED CL-181BI

Description BI means built-in LED Gem Tester Refractive index is one of most important optical parameter. Gloss of gem can be estimated by the parameter. The kinds of gem can be precisely determined in ... Read More
2015-04-20 09:03:52
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