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Polarized test card;polarized sunglasses display card
1. Used to test domo polarized sunglasses
2. Hidden image inside is invisiable to naked eyes or regular sunglasses
3. Partern & Size are customized
4. Single or Multicolor words and image all available
5. normal size is 9*12cm or 10*15cm
6. OEM will be welcome
Polarized test card