42 engineering services; inspection of the green and low carbon hydrogen of others for quality control purposes; technical advisory services related to the design of plant components and equipment for hydrogen power plants; scientific analysis and evaluation of the green and low-carbon hydrogen production and distribution services of others to determine conformity with certification standards; inspection of the green and low carbon hydrogen of others to determine conformity with quality certification standards; engineering services in the field of carbon emission reduction; quality management services, namely, quality testing, analysis and evaluation of the green and low carbon hydrogen of others to determine conformity with certification standards; testing of the green and low carbon hydrogen of others to determine conformity with quality certification standards; engineering services related to hydrocarbon production and liquefaction; engineering design services; engineering design services in the field of equipment and devices for manufacturing industrial nitrogen, oxygen, hydrogen, carbon dioxide, carbon monoxide and other gases; engineering design services in the field of equipment and devices for transporting industrial nitrogen, oxygen, hydrogen, carbon dioxide, carbon monoxide and other gases