Parutan difrograf holografik 36x38mm 600 garisan 300 garis 100 baris 50 baris di cina

Holographic diffraction grating 36x38mm 600 lines 300 lines 100 lines 50 lines

Parutan difrograf holografik 36x38mm 600 garisan 300 garis 100 baris 50 baris di cina-MasterLi, China Factory, pembekal, Pengilang

Parutan difrograf holografik 36x38mm 600 garisan 300 garis 100 baris 50 baris di cina-MasterLi, China Factory, pembekal, Pengilang