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1.56 photochromic
1.60 polyurethane super-toughened monomers
1.60 acrylate monomers
1.56 blue block monomers
TQianyuan 1.60 polyurethane monomers
1.60 blue block monomers
Qianyuan 1.499 monomers:
Qianyuan super
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