42 Providing advice, consultancy, and environmental information in relation to oil, gas, geothermal, and storage well engineering, construction, and drilling services of environmental engineers, chemical engineers, mechanical engineers, and service personnel; Engineering services for oil, gas, geothermal, and storage well drilling, analysis, equipment, tools, and parts; Engineering, design, and manufacture of oil, gas, geothermal, and storage well drilling rig equipment, tools, and parts; conduct engineering test, analysis, and practical procedures for hydrogen injection and equipment usage