The projecting camera uses the Fresnel lens
Minimum Order:1000piece
SHAN DONG YU YING OPTICAL INSTRUMENT CO.,LTD
The projector with a Fresnel lens reflex
Minimum Order:1000piece
SHAN DONG YU YING OPTICAL INSTRUMENT CO.,LTD
A miners lamp using Fresnel lens
Minimum Order:10000piece
SHAN DONG YU YING OPTICAL INSTRUMENT CO.,LTD