Inquiry of air blow

KINDLY YOU ARE INVITED TO SUBMIT YOUR BEST QUOTATION OF TECHNICAL AND COMMERCIAL PROPOSALS FOR :
ITEM : AIR BLOWER
TYPE : POSITIVE DISPLACEMENT OR SIDE CHANNEL
FLOW RATE : 600 - 650 M3/HR @ 400 MBAR
POWER : 11 KW / 380V/3 PH / 50HZ.
REQUIRED QUANTITIES : 6 UNITS