- 11
- Sep
Holographic diffraction grating for teaching 1.3 usd/pc 600 lines 300 lines 100 lines 50 lines in china
kita duwe pabrik kisi difraksi Holographic paling apik ing China
600 lines 300 lines 100 lines 50 lines for 1.3usd/pc
the size is 36mm x 38mm
