Founded in 1958, SEDIN Engineering Co., Ltd. has grown into a leading enterprise in the engineering sector. In 2006, it earned recognition as a national high-tech enterprise, and in 2008, it underwent restructuring into a wholly state-owned, single-member limited liability company. By 2011, SEDIN had achieved the prestigious Class-A Engineering Design Integrated Qualification, the highest accreditation in the engineering construction field, granted by the Ministry of Housing and Urban-Rural Development.
The company holds a comprehensive range of qualifications, including Engineering Consulting, Project Supervision, Project Bidding, Class-A Engineering Survey, Environmental Assessment, Pressure Vessels, Pressure Pipelines, Labor Safety Evaluation, and Labor Cooperative Operation License for Foreign Contracted Projects. It also operates under an integrated management system certified for the three standards of quality, environment, and occupational health and safety standards. As a wholly owned subsidiary of CNCEC, SEDIN boasts a registered capital of RMB 1.5 billion.
With a workforce exceeding 1,200 employees, SEDIN is home to remarkable talent and expertise. Among its team are one national engineering design master and four engineering survey and design masters in the petroleum and chemical industries. Over 440 employees hold senior professional titles, and more than 260 possess top-level qualifications, including first-class structure engineer, first-class architect, national supervision engineer, first-class project manager of construction enterprise, national project general contracting project manager, cost engineer, safety engineer, registered consulting engineer, and safety evaluation engineer. The company also employs a group of distinguished experts celebrated for their engineering design achievements in China, underscoring its robust technical strength and commitment to innovation.
SEDIN's proprietary technologies, including MTG, phenol-acetone, TDI, and coke oven gas-to-methanol, rank among the world's best. Its advancements in coal-based natural gas, coking engineering, tar deep processing, nitric acid, ammonium nitrate, polysilicon, ethylene oxide, aniline, polyoxymethylene, etc. have captured significant market shares, positioning SEDIN as a leader in the industry.
To date, SEDIN has undertaken over 1,300 large and medium-sized key construction projects both domestically and internationally. With an impressive record of accomplishments across China, the company has received more than 200 awards for outstanding design and scientific and technological innovation at the national, ministerial, and provincial levels. Since 2005, it has consistently ranked among the top 100 enterprises in China’s engineering survey and design sector.