Purchase Qty. Reference FOB Price
10-499 pieces US$3.23
500+ pieces US$3.00
Product Description
H-K9L BK7 diameter 18mm focal length 100mm optical glass telescope doublet achromatic cemented lens agglutination balsaming lens Product Description Production name achromatic lens Material optical glass Surface Quality 60/40,40/20 Dimention Tolerance +/-0.01 Diameter custom-made Focus ...