Enertech Services International, Inc. (ESI), headquartered in Houston,TX with branch offices in China (Beijing, Tianjin, Tanggu), provides multi-discipline engineering design, site support engineering during construction, and project management services to clients in the energy industry worldwide.  ESI is organized principally in two business units: Offshore and Marine Group and Industrial Group. 

Combining its core group of over 90 experienced engineers and designers, ESI also has access to 200 plus technical personnel of TXTE (Tianjin Xingao Technical Engineering Co., Ltd.), which specializes in the production design of offshore platforms, ships and marine structures, ESI offers one-stop engineering and design services covering Concept/Functional Design, FEED/Basic Design, Detail Engineering and Design, and Production Design, and has the capability and resources to execute multiple detail engineering and design projects in parallel.
 
　　益资海洋工程技术公司（ESI） 是从事深水海洋工程的专业公司，总部设在享有世界海洋工程与深水技术中心盛誉的休斯顿，并在北京和天津设有分公司。
　　ESI主要从事深海油气田钻探开发这一高科技领域中的工程设计与技术研发，专长于深水区块的开发方案、钻探、生产运输系统，特别是包括FPSO，Spar，TLP，Semisubmersible在内的各种浮式平台系统的工程设计。ESI以其丰富的深水海洋工程的经验，不断的研发和更新，走在世界深水海洋工程行业的前列，充分结合两地的实力与优势，以先进的专业技术向国内外客户提供一流的服务。