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CR39防蓝光平光基片70直径300弯，400弯，2.0厚度。适合染色，变色，镀膜加工使用。欢迎品牌商跨境电商合作。CR39 blue light-blocking plano lens blanks, 70mm diameter, 300-base curve, 400-base curve, 2.0mm thickness. Suitable for tinting, photochromic, and coating applications. We welcome brand partners and cross-border e-commerce collaborations.
