Purchase Qty. Reference FOB Price
100-499 Pieces US$310.00
500-999 Pieces US$260.00
1,000+ Pieces US$160.00
Product Description
General introduction: An optical device composed of a large number of parallel slits of equal width and spacing is called a grating. The commonly used grating is made by engraving a large number of parallel notches on the glass sheet. The notches are opaque parts, and the smooth part between the ...