Slot-die type gas distribution device for photovoltaic manufacturing

A slot-die type gas distribution device for photovoltaic manufacturing, comprising a first gas distribution device, wherein the first gas distribution device is provided with a first inlet and a first outlet;

• the first gas distribution device comprises m (m is greater than or equal to 2) first gas distribution tubes, which are communicated in sequence, and each two adjacent first gas distribution tubes are communicated, so as to implement gas distribution processes multiple times;
• the first inlet is arranged on the first gas distribution tube at a starting end, and the first outlet is arranged on the first gas distribution tube at a tail end;
• and
• the m first gas distribution tubes have different sizes.