Yo Point Pen
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DRK8011 Digital Yo Point Pen
Awọn abbeder refractometer jẹ ohun elo ti o lagbara ti npinnu sihin, translucent omi, tabi ri to refractive atọka ND ati ki o kan Building pipinka ND-NC (eyi ti o jẹ o kun ninu eyi ti awọn sihin omi jẹ o kun).
