Ukukhetha umbala ofanele wamalensi e-photochromic kungathuthukisa ukusebenza nesitayela. Kwa-Ideal Optical, sinikeza imibala eyahlukene ukuze ihambisane nezintandokazi nezidingo ezahlukene, okuhlanganisa i-PhotoGrey, i-PhotoPink, i-PhotoPurple, i-PhotoBrown, ne-PhotoBlue. Kulokhu, i-PhotoGrey i...
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