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

    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?
    A:

    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.