- ESAMI
- IAA – Arusha
- Sopa Lodges.
- Elewana Hotels Limited.
- Akorn Investments Limited.
- Cultural Heritage Ltd.
- Roy Safaris Ltd.
- A to Z Textiles Limited
- SUNFLAG Tanzania Limited
- CALTEX
- United Nations – ICTR.
- United Nations – HABITAT.
- Selian Estates
- Burka Estates
- Magugu Estates
- Arusha Urban Water Authority
- Tanzania Breweries Ltd
- New Arusha Hotel
- Hotel Seventy Seven
- Ultimate Security
- Balton Tanzania
- General Tyres
- KilimanjaroInternationalAirport
- Kimemo Estates.
- Blue Jewel Company Ltd.
- Hodi (Hotel Management) Co. Ltd.
- Mega Hotels & Tours Ltd.
- Ministry of Water & Irrigation
- Ministry of Agriculture and Food Security.
- Various District Councils.
- Various Urban Water Authorities
- Larsen & Toubro ECC
