Powerful laser pointers do require the use of safety glasses
Powerful laser pointers do require the use of safety glasses In various industrial dot alignment work fields, green laser diode module is always in serious beam emission at all desired working dis... continue reading »
2 signatures
Goal: 5,000
All Signatures
(2 total)
1.
daniel pilotte de la BAROLLIERE
· Marseille
4 January 2016
"Je signe cette pétition"
2.
zheng yu
· New York
16 December 2015
"Je signe cette pétition"
