Veja alguns vídeos sobre as máscaras de solda da Optrel.
http://www.youtube.com/watch?v=Ry1ko-AJ8Cc
http://www.youtube.com/watch?v=PPpHCqEUZ94
http://www.youtube.com/watch?v=tF13eN1B7zI
http://www.youtube.com/watch?v=99W-HvtBL8I
http://www.youtube.com/watch?v=ucHdvZv23Pk
http://www.youtube.com/watch?v=qvnWdnpx6e8
http://www.youtube.com/watch?v=q6vQb36sdoI
http://www.youtube.com/watch?v=19VRj67Qv-k
http://www.youtube.com/watch?v=6af6FzgIzKM
http://www.youtube.com/watch?v=Ck21X-Q5PpU
http://www.youtube.com/watch?v=uTKDqZcWFAQ
http://www.youtube.com/watch?v=RZHl-MlZ0eQ
http://www.youtube.com/watch?v=JoI5amRwT3M
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