Type: single digital, dual digital, tri-digital, quarter digital, multiple one 1. Light 2. Long-lived 3. Urge the voltage to below 4. Ready response 5. The luminance is even 6. The stability is strong Use: Household appliances, Communicatio... - Update: 2005-06-02

1) Structure: REF is complex and it requires high accuracy, as well as heat resistance and light preventing. The materials of the REF are mostly employed modified PPO and modified PC at present. 2) Size: Regarding the different size of the letter R... - Update: 2006-02-09