Item No : P1G-424803
Payment Term : L/C, T/T, Negotiable
Min. Order : Negotiable
Unit Price : Contact Us
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Place of orgin :
China
Transportation : Negotiable
Delivery Time : Negotiable
Contact Details : 
Photochromic Flint Button Features Specifications :
Features:
1) Fusing with phtoochromic glass blank
2) Expansion ratio: 8.3 - 8.7 x 10 - 7
3) Refraction ration: 1.653
4) Softening temperature: 460 degree
5) Fusing temperature: 580 degree
6) Abbe number: 38
7) Gravity (d): 3.85.
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