Hong Kong Watch Fever 香港發燒友
Showing posts with label
GTLS
.
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Showing posts with label
GTLS
.
Show all posts
Friday, October 8, 2010
Tritium watch, H3 Watches, gas light watches, GTLS Watches Working Principle
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What is GTLS? GTLS stands for Gaseous Tritium Light Sources, these are tiny glass vials with a thin coating of Phosphorescent substance on ...
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