http://www.oil-gassuperchargedsystem.com/ Who I Am, What I Can Do, What I Can Do Well Founded in 2016 and headquartered in Dalian Free Trade Zone, Liaoning Province, China, Yisen Energy is a world-renowned provider of energy technology solutions and surface hardening technical solutions, specializing in technical services related to oil and gas exploitation, research and development of oil and gas equipment, application solutions for system integration, and operation hosting services.