This company according to optics resin lens the craft characteristic,has promoted the high fever stability, high strength, the highchemically stable special glass mold semifinished materials,guarantees the product to be low brokenly in the use, high accuracy,durable. This product after the test batch use, had indicated itsoverall performance surpasses the domestic existing similar productlevel, achieves the overseas famous factory similar product level.

Glass mold semifinished materials specification 
physical performance, optical quality and request: 
 
the specification size allowable deviation should conform to table 2 to stipulate that,
 
the outward appearance quality should conform to table 3 to stipulate that,
 
the air bubble, the stripe should conform to table 4 requests: