Future resources of alternative clean energy are one of the most important economical activities of the industrial world. Hydrogen systems and fuel cells production and usage, create new technological challenges for high pressure gas systems designers. The extremely high pressure of a flammable gas requires creative solutions, which are based on years of experience in different industrial and engineering field. Ham-Let is continuously expanding its product certifications to ECE R110 and ISO 15500 standards for use in Natural Gas and Hydrogen applications.