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Patent：2025 Multilayer film optical sheet with plural polygonal grids and manufacturing method therePatent：2024 Multilayer film optical sheet with plural polygonal gridsPatent：2023 Semiconductor device manufacturing method using metal lift-off process and semiconductorCertification：IATF 16949Certification：ISO 9001Company website：https://krt.kingraytech.com/zh-TWPhone：03-5958589Main product：Optical instruments & equipment

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