Okay.
Uh another important point is uh we really should use uh energy uh sparse , friendly components. Uh there are specially uh designed um energy-friendly components which consume uh far less power than uh conventional components. And um if we want to use uh a rechargeable design or uh a energy-save design , we should really implement them.  Um for cost-effectiveness , we should really use a very low-cost uh circuit board , um because most of the production cost are are in this uh part of the equipment.
Okay.
And um the money we save on using this we can use uh for elaborate fancy lighting uh techniques , blinking LEDs and all that kind of fancy stuff.