... than 1250cm^2 --- DC12V + adaptor, lighting area is bigger than 1250cm^2 --- AC90-240V2. What is the process of producing el panel ?3. How ... customer’s request.Step 2: We will quote it based on size , flashing way, lighting area , power supply and quantity ... sea/express.4. Vast Applications:EL panels are widely used for advertising in commercial centers, chain stores, supermarkets, airports, railways, ...