उत्पत्ति के प्लेस
Beijing, China
अनुकूलित समर्थन
OEM, ODM, OBM
Product name
Hot sale cheap 21.5 inch led eye vision chart
Monitor size
21.5 inch Screen Vision Chart Eye Test Chart
Chart part
E charts, C charts, numbers, alphabets, and children charts
Application
Optical Shop; vision test
Type
Ophthalmic Optical Equipments
working distance
2 ~6.5meters with incremental value of 0.1 meter
color blind test
available
Display
21.5" high resolution screen display
randomized charts
available