■ Using self-produced motors, the process is strictly controlled.
■ The surface of the fuselage is painted to resist corrosion and rust.
■ Ultra-thin body design, hidden ceiling does not take up space.
■ Second gear speed regulation, silent operation.
■ There are motor access door panels and filter screen access panels on the side, which are quick and easy to replace.
■ Two-layer HP high-efficiency filter or two-layer full-effect composite filter can be installed, and the purification efficiency is as high as 99.5%.