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Aug-18-10
From Harbin, Heilongjiang, China
 
A Outer clean and transparent, without visible bubble and impurity.
B Specific density: 2.5g/cm3
C Index of refraction: Nd=1.55
D Content of Sio2: =80%
E Spherical beads: =85%
F Coated beads to avoid moisture and falling down.
G Hardness: 6-7
H coating : silicon oil


25kg/bag or 1000kg/bag
Details about your case:


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