Feature: -- front door; -- compressor system is at the back 1. Material :all inside and outside is stainless steel 304. Stainless steel for inner & outer layer, also for the trays. 2. Compressors:high quality compressor, the germany high quality compressor is optional, each compartment has a separate temperature controller and a separate compressor system 3. Power: 220-240v/50hz-60hz, back up power (ups) can supplier according to customers requirement. 4. 7 system failure alarms 5. High quality temperature control system. The large control panel and console, easy to operate. The inside room temperature is from 0 to -5?(±0.1?). And the temperature is -18?to 10? adjustable 6. Door frame with a unique one-piece design, simple and easy to clean. Door seal belt can be replaced 7. Usb interface, temperature record system is optional.