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  • Q: There is some problem with the product design. Could you help us to resolve the problem?

    With years of developing, we have much experience and own understanding of coating design according to different applications. There is much we could do for you.

  • Q: What is your lead time for filters?

    Standard fluorescence filter, astronomy filter can be sent the same day payment received. Other stock filters with different size can be sent within 7 days after payment confirmed. Normal OEM orders can be shipped within 15 days. Special OEM orders shipment time depends.