2007-1-13
CATHODE RAY ( CRT ) PHOSPHOR
According to its application, CRT phosphor is divided into 4...
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2007-1-13
INFRARED ( IR ) LASER TEST PEN
As one of the most advanced Anti-Counterfeit test...
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2007-1-13
The special material developed by KPT combines
with kinds of EL phosphor to make EL...
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