Chinoz Prospect International - Dealers on transformers and electrical fittings, based in Port Harcourt. Nigeria Engineering Works - Engineering firm supplying and maintaining home and office appliances. Etco - Engineering firm undertaking electrical, airconditioning and plumbing contracts. Includes list of executed projects. Astac - Traffic engineers, suppliers of traffic control systems and public lighting systems. Energo - Power and energy engineers, and contractors. Royal Power Integrated & General Services Ltd - A developer of power plants focusing in Nigeria. Posses expertise in power industry, site development, engineering, procurement, construction and operating management. Stag Engineering Ltd - Dealers on differrent range of power generators. Has online power calculator Akpo Onyegwa Refrigeration Company - Air conditioning services company. Handles industrial and domestic units.