I got new Chinese aftermarket compressor for my car and it wasn't good. Then I went for a kabli compressor which worked fine and better than the new one for 2 seasons. Now the bearing has worn out and haven't repaired it. As per my experience the new Chinese compressors are not good enough. Try and get a clean kabli compressor.
Also when getting the AC installed give due attention to the blower under the dash. Mine never fits perfectly with the pipes and gets lose after a while and needs to be readjusted and tightened again. It might be due to faulty connection mechanism on mine, but just in case have that checked, so that it remains firmly in place and the air pressure at vents is not compromised due to the loose blower under the dash.