- House No.28,Street No.10,Sector F-8/3, Islamabad
- www.zhenhuaoil.com
- 051-2252769
- 1st Floor,Dagli Centre,MR-7/28,M. Feroze Street,Jodia Bazar, Karachi
- www.crescentchem.com
- 021-32414201
- HQ FWO,# 509,Kashmir Road,R.A.Bazar,Saddar, Rawalpindi
- www.fwo.com.pk
- 09274921
- Descon Head Quarters,18 Km.Ferozepur Road, Lahore
- www.descon.com
- 111-337-266
- #8,2nd Floor,Shahnawaz Plaza,G-11 Markaz, Islamabad
- www.dss.org.pk
- 051-2830800
- #419,4th Flr,Mashrique Center,Sir Shah Suleman Road,Block-14,Gulshan-e-Iqbal, Karachi
- www.esconcerns.com
- 021-34146263
- 5th Floor,The Forum,Block-9,G-20,Khayaban-e-Jami,Clifton, Karachi
- www.enipakistan.com.pk
- 021-35879951
- 111-111-364
- 80-B,Sasi Arcade,Block-7,Clifton, Karachi
- www.ezziengineering.com
- 021-35832540
- Chughtai Plaza,Block No.3,Diplomatic Enclave No.1,P.O.Box 1324, Islamabad
- www.globaldrilling.com.pk
- 051-2832070
