(1) Oxygen mask: it is mainly composed of nose clip, mask, elastic belt, mask connector, oxygen pipe, conical connector, etc.
(2) Adjustable mask: mainly composed of nose clip, mask, oxygen concentration regulator, elastic band, conical joint, adapter, atomizing joint, etc;
(3) Non re suction mask: mainly composed of oxygen bag, oxygen bag connector, adapter, side hole, mask, nose clip, elastic belt, conical connector, oxygen pipe, conical connector, mask connector, etc.
(4) Atomizing mask: mainly composed of nose clip, mask, adapter, elastic belt, atomizing tank, conical joint, oxygen pipe, conical interface, etc.
(5) Incision mask: mainly composed of elastic belt, incision mask, spherical joint, curved joint, etc.