chemical and chemical compositions used in the exploration for, drilling for, producing and transporting oil

maintenance and repair services in respect of electrical and electronic control apparatus and instruments and of parts and fittings for the aforesaid goods

ELECTRONIC APPARATUS FOR THE CONTROLLING AND MONITORING OF GAS TURBINES AND COMPRISING OF COMPUTERS, MICROPROCESSORS, VISUAL DISPLAY UNITS, SPEED GOVERNORS, TEMPERATURE MONITORS, VIBRATION MONITORS AND PARTS THEREFOR