Ours group members think a pen comtainer has a lot of advantages. advantages. You can put you pens in the pen container and you can put the pen container on the window or the desk as an adornment. So …
Semiconductor laser marking machine uses the DPSSL as its laser power. DPSSL stands for diode-pumped solid state laser; it is made by pumping a solid gain medium with a laser diode. Because of its h…
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