2011 - 2013, i am an ex employee of atlas.
Atlas battery plant in SITE karachi,
atlas honda plant in shershah SITE karachi. only assembles bike and manufactures few parts.
atlas(alwin) plant in qaidabad karachi (same area now has atlas metals, atlas autoparts as well) i used to work here. also makes allwin copper radiators. loads also makes copper radiators. allwin also made brake discs and brake drums for all local cars. pistons for ship & tank diesel engines to tiny CD 70 engines. my personal domain was CD 70 cylinder machining. part was made from raw metal to foundry to machining of finished item
SEVERAL vendors for making honda parts in karachi. such as tank, plastic covers, small parts, silencers, rims, nuts, bolts, cables, wire harness, speedometer etc
thal engineering (sub company of indus, house of habib) manufactures wiring harness for all cars. is the partner for denso and makes denso air conditioning systems for all local cars.
you can buy a non ac alto/mehran, go to their workshop on tariq road, and have the factory AC system installed.