The appearance goes first. The first thing we see is this model is very small all right? Yes, it is small its capacity can be 6L/10L/15L,however its capacity most can be 30L. Actually some of our customer very love it because of this design. We have sell many country from all over the world.The outside look contains the rear panel and the front panel, these panels are made by ABS. Next is the knob, the film and decorative ring, these parts can be OEM as you want. There is no doubt that the LOGO can be designed as you need. The LED indicating lights, green and red based on the background.