The Mulaut Abattoir is located in Mulaut in the Brunei-Muara District. Mulaut Abattoir Sdn. Bhd. was privatised in August 1990. It provides Islamic-sanctioned slaughtering facilities to local farmers and butchers, as well as for the Islamic rituals of Qurban, Aqiqah and other religious ceremonies. The abattoir also sells halal meat to the public and supplies Royal Brunei Airlines' inflight catering, via Royal Brunei Catering.
Royal Brunei Catering (RBC) was formerly Dairy Farm (Brunei) and was established as a joint venture between Dairy Farm and Royal Brunei Airlines in 1975 to operate the flight kitchen at Brunei International Airport. In addition to this, it also operated an ice cream parlour at Darussalam Plaza on Jalan Sultan in Bandar Seri Begawan. When Royal Brunei Airlines purchased the shares held by Dairy Farm, the company was renamed Royal Brunei Catering Sdn Bhd.
RBC operates the flight kitchen at Brunei International Airport, the Express Fast Food chain in Brunei and a number of restaurants in Bandar Seri Begawan, including two halal Chinese restaurants - Emperor's Court and Dynasty.
Royal Brunei Engineering Sdn Bhd (RBEng) was formed from the Engineering Department, the Engineering and Maintenance arm of Royal Brunei Airlines (RBA). RBEng was spun-off as a subsidiary of RBA in early 2005, the national flag carrier of Government of Brunei.
RBE specialises in heavy maintenance of B757 and B767 up to “12C” and “Structural 4C” Checks, major modifications, SB’s, AD’s, Pylon Modification, Cabin Re-configuration, aircraft painting and re-weigh. It also provide similar services to the A320 family of aircraft. International Customers of RBE includes Air Mauritius, Ansett Worldwide, Britannia Airways, Turkmenistan Airlines, Vietnam Airlines, and Thai Jet Airways.