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Checklist for Purchase

CHECKLIST for selecting the proper ohp:

1. Design, quality of the construction
2. Light output (brightness) in lumen
3. Costs for the lamps, lamp life
4. Even illumination and sharpness
5. Good colours and contrast
6. Vibration-free picture
7. Low temperature on the working surface
8. Low fan noise
9. Environmentally friendly, fully recycable
10. Maintenance - friendly, longtherm after-sales service
11. Warranty period
12. Mechanical and optical elements