Testing, monitoring, inspection, evaluation, * certification, * surveying, technical verification and validation services relating to oil and gas production, oil and gas well treatment, oil and gas well fracturing and stimulation, oil and gas well completion and oil and gas well perforation; quality control and quality assurance services relating to oil and gas production, oil and gas well treatment, oil and gas fracturing and stimulation, oil and gas well completion and oil and gas well perforation; inspection, testing, analysis and evaluation of services and equipment relating to oil and gas production, oil and gas well treatment, oil and gas well fracturing and stimulation, oil and gas well completion and oil and gas well perforation for the purpose of certification; information, advisory and consultancy services in relation to all of the aforesaid