Business Portfolio
NSUM currently comprises five manufacturing enterprises: CSE,HBM,Shanghai Matsuo,Yahgee,and Chixiao.Our diversified portfolio spans offshore engineering equipment, marine outfitting, high-end steel structures, modular construction, and metal sandwich panels.Through years of dedicated operation, each subsidiary has earned a prominent reputation and brand influence in its respective core field: CSE in offshore oil platform jackets, HBM Building Materials in marine outfitting, Yahgee in modular construction, Shanghai Matsuo in overseas steel structures, and Chixiao in metal sandwich panels.
Offshore Facilities Business: CSE(EPC and Fabrication services for Jacket & Topside,Module,Offshore Wind,Mooring System and Subsea Equipment,etc)
Ship Outfitting Business: HBM(ship outfitting,panels,doors,sanitary units,land-based integrated bathrooms,EPC contracting,etc.)
High-End Steel Structure Business:Shanghai Matsuo (overseas steel structures, mining, power plants, buildings, petrochemical steel structures, etc.)
Modular Building Business:Modular Building Business: Yahgee Modular (modular buildings, special containers,etc.)
Metal Faced Sandwich Panel Business:Chixiao Technology (rock wool sandwich panels, wall panels, roof panels, curved panels, etc.)
New Business:Focusing on high-end equipment manufacturing, green energy, domestic substitution, and other technically demanding sectors; seeking high-quality target enterprises for mergers and acquisitions.

Shenzhen Chiwan Sembawang Engineering Co., Ltd. (CSE) is an offshore equipment manufacturing enterprise under Shenzhen New Nanshan Holding Group United Intelligent Manufacturing Co., Ltd. As a national-level high-tech enterprise established in 1994, it is owned by Shenzhen New Nanshan Holding Group United Intelligent Manufacturing Co., Ltd. (32%), Chixiao Enterprise Co., Ltd. (32%), and CNOOC Investment Co., Ltd. (36%). As a globally renowned specialist in Jacket fabrication, CSE based on the construction of Jacket, gradually transitioning to EPC services for Jackets and offshore oil & gas platforms. Our products and services are highly recognized by well-known domestic and international clients, including major energy companies, EPCI contractors, and offshore wind power operators.
CSE located in South of China near Hong Kong, has 185,000 ㎡ yard area and 406 meters waterfront with 9 meters water depth which can be used for large offshore oil & gas and offshore wind farm facilities. It provides optimal infrastructure and unique physical conditions for the construction of large scale oil & gas and renewable energy offshore facilities. CSE delivers an annual production capacity of 50,000 tons, with a rolling capacity of 4,000 tons per month. The yard is equipped with dedicated workshops for sand blasting, painting, structural and piping fabrication, and supported by advanced machinery including crawler cranes, gantry cranes and related equipment. Since establishment, CSE has been actively involved in the offshore engineering industry for over 30 years and proven familiarity in both International Offshore Industry Standards and International Energy Company project standards.




CSE's operations span major domestic and international oil and gas development regions, with primary market presence in Southeast Asia (Thailand, Malaysia, etc.), Africa (Republic of the Congo, etc.), the Middle East, and Europe. Key clients include: CNOOC, Italy's ENI, Saudi Aramco, Shell, Chevron, ConocoPhillips, BP, Total, PTTEP, Qatar NOC, COOEC, Hyundai Heavy Industries, Seatrium, McDermott, SBM, Bluewater, Nippon Steel, and DEME Offshore. Since establishment, CSE has successfully delivered a total of 123 Jackets worldwide, including 115 Oil and Gas Jackets and 8 WTG Jackets. 17 Jackets exceed 10,000 tons, with total weight of more than 880,000 tons.
ENI Congo LNG Project - Nene WHP1 EPC
·Client: ENI (Italy)
·Facilities Location: Congo Sea
·Total Weight: 2,550 MT
·Jacket mechanical completion on September, 2024
·Topside mechanical completion on November, 2024
ENI Congo LNG Project - Nene WHP1 EPC project is CSE's first international EPC project. The scope of work encompassed detailed design, procurement, onshore construction, offshore hook-up and commissioning, covering wellhead platform, six-legged Jacket and piles. The overall construction, integration, and onshore commissioning work were successfully executed at CSE yard.

Huanan Building Materials(SHENZHEN) Co., Ltd. (HBM) is a ship outfitting manufacturer under NSUM. As a national-level high-tech enterprise established in 1985, it is an internationally influential provider of comprehensive ship interior solutions. Leveraging the robust resource advantages of CNDI,HBM has established an integrated operational platform encompassing R&D, design, production, sales, and interior engineering. The company is committed to delivering safe, comfortable, and environmentally friendly comprehensive interior solutions through high-value-added products and services.






HBM has established long-term partnerships with over 500 shipbuilding and construction-related enterprises across more than 40 countries worldwide. Its ship compartment products rank first in Asia in both production and sales volume, while its interior turnkey contracting business is experiencing rapid growth. The company's ship compartment brand enjoys the highest reputation in Asia and holds the top market share in Japan, Singapore, Norway, the Netherlands, and other regions.
Adora Magic City – China's First Domestically Built Large Luxury Cruise Ship
·Tonnage: 136,200 GT
·Passenger Capacity: 5,246
·Dimensions: Length 363.6m, Beam 37.2m
·Project Area: 3,200 square meters
·Engineering service scope: General contracting for the first-level interior decoration works of the crew public area and the passenger market and dining area
Looking ahead, HBM upholds the corporate spirit of China Merchants Group in the new era and promotes the outstanding culture of China Nanshan. We will continue to deepen our expertise in ship interior design, contributing to national deep-sea technological innovation through industry-leading integrated interior solutions. Simultaneously, it steadfastly pursues an international development path. By leveraging technological innovation as its core competitiveness, standardized and internationalized operational management as its foundation, and scaled, intensive operations as its competitive model, the company continuously refines its customer-value-oriented information service processes. This comprehensive enhancement of its integrated solution capabilities enables it to deliver globally leading interior engineering solutions, products, and services to clients worldwide.

Shanghai Matsuo Steel Structure Co., Ltd.(Shanghai Matsuo) is a high-end structural steel fabrication enterprise under NSUM. Originally established in Shanghai in 1996 as a wholly-owned Japanese enterprise by Matsuo Bridge Co., Ltd. of Japan, the company underwent capital increase and share expansion in 2006 when acquired by CNDI, transforming it into a Sino-Japanese joint venture. CNDI currently holds an 86% stake. In 2009, the Japanese shareholder changed from Matsuo Bridge Co., Ltd. to IIS, a wholly-owned subsidiary of the IHI Group.
Located along the Huangpu River in Fengxian District, Shanghai, the company completed its initial factory construction in 1997. It currently occupies a site area of 131,000 square meters with an annual production capacity of 30,000 tons. As an international enterprise specializing in high-quality steel structure fabrication, Shanghai Matsuo is a leader in steel structure processing for construction and infrastructure projects. It serves as a core supplier to globally renowned owners and EPC companies. Among the few domestic steel structure fabricators certified by Japan, Europe, and the United States, the company boasts nearly 30 years of structural product construction experience and is recognized as the industry leader of the steel structure fabrication industry.





Leveraging its exceptional understanding and execution capabilities in international markets and overseas projects, inheriting the outstanding production and quality systems from Matsuo Bridge CO.,Ltd, and harnessing the collective wisdom and hands-on expertise of its entire workforce, Shanghai Matsuo has become a core supplier or cornerstone long-term partner for globally renowned owners and top-tier contractors such as Shell, BHP, Rio Tinto, BASF, MM&Kenzai, IHI, Sumitomo Heavy Industries, Chiyoda, Bechtel, Fluor, and Technip Energies.
Mumbai Trans Harbour Link (MTHL) Steel Structure Project
·Project Owner:Mumbai Metropolitan Region Development Authority (MMRDA), Government of the Republic of India
·Project Overview:The Mumbai Trans Harbor Link (MTHL) spans the Port of Mumbai within the Mumbai Metropolitan Region (MMR) in Maharashtra, India. This 22-kilometer bridge, funded by Japanese ODA assistance, will become India's longest sea-crossing infrastructure upon completion.
·Project Weight:19,000MT
·Project Duration:April 2019 - December 2021

Changshu Yahgee Modular Building Co., Ltd. (Yahgee) is a subsidiary of NSUM, specializing in modular buildings and the production of specialized containers. As a national high-tech enterprise, the company was established in 2011 and is dedicated to the development and operation of innovative integrated buildings and specialized containers. The company offers a range of products, including modular buildings and specialized containers, which have been successfully exported to countries and regions across Asia, Australia, Europe, North America, Southeast Asia, the Middle East, Africa, South America, Japan, Hong Kong, Singapore, and more.








As a Leading Enterprise in the Container Industry, the company boasts advanced equipment and production lines, with a total factory area of 167,000 square meters. Its annual production capacity can simultaneously meet the demand for 3,000 modular buildings and 3,000 specialized containers. Additionally, the company has established professional international marketing and technical teams in South China and East China, with a geographic advantage for shipping to major ports across the country.
Since its establishment, Yahgee has actively undertaken social responsibilities and embraced its corporate mission. The company has played a pioneering role in national and local government efforts for earthquake relief and epidemic prevention. Looking ahead, the company will continue to contribute to China's transformation from a major manufacturing power to a global manufacturing leader. With a spirit of innovation, self-improvement, determination, and willingness to take on challenges, Changshu Yahgee is committed to becoming a world-class modular building enterprise.
HKU Project
·Project Type: Student Dormitory
·Total Floors: 19
·Number of Modules: 952 modules
·Total Floor Area: 25,380 square meters
·Project Duration: 8 months
·Project Address: 4 Police School Road, Wong Chuk Hang, Hong Kong
Changshu Yahgee places great emphasis on technological innovation,Changshu Yahgee attaches great importance to technological innovation and has obtained several qualifications, including "National High-Tech Enterprise," "Jiangsu Provincial Enterprise Technology Center," and "Jiangsu Provincial Modular Building Engineering Technology Research Center." The company holds 4 invention patents and 123 authorized patents in total. It has established long-term cooperative relationships with numerous domestic and international enterprises, universities, and research institutions.
The company is certified with various management systems, including ISO9001, ISO14001, and ISO45001 for quality, environmental, and occupational health and safety management. Additionally, Changshu Yahgee has obtained multiple factory and product certifications from other countries, including Japan's R-Class Steel Structure Certification, Steel Structure Modular Building CSA Certification, Singapore's PPVC-MAS Certification, New Zealand's Multi-pod Certification, and Norway's Tek 10 Certification.

Shenzhen Chixiao Building Technology Co., Ltd.(Chixiao) is a subsidiary of NSUM, is a leading provider of sandwich panel enclosure system solutions. As one of Shenzhen's first "National High-Tech Enterprises," the company was founded in 1984 and pioneered the production, R&D, and application of metal-faced sandwich panels in China. With over 40 years of industry excellence, it has established itself as a renowned specialist in sandwich panel enclosure systems nationwide.
Chixiao was a national pioneer in introducing internationally advanced automated production lines. It established the Shenzhen Chixiao Industrial Park and has continually upgraded its manufacturing equipment to maintain its technological leadership in China. This commitment to innovation was recognized in 2008 when the company was designated as a National High-Tech Enterprise.In 2013, the company further solidified its technical edge by introducing a production line for structural rock wool sandwich panels, creating a new generation of products renowned as the highest quality in the domestic market. The company now operates two sandwich panel production lines with a combined annual production capacity of two million square meters.
After years of relentless effort, Chixiao Technology has continuously strengthened its comprehensive capabilities. By actively collaborating with universities and research institutions, the company has established a robust industry-university-research system and achieved substantial R&D results. It currently holds multiple design, construction, and production qualifications, has over 3,000 engineering cases, more than 30 invention and utility model patents, and has received numerous quality and product certifications from internationally recognized authorities. As a member of the China Construction Metal Structure Association, a standing council member of the Shenzhen Building Materials Industry Association, and recognized as a High-Tech Enterprise and an Advanced Technology Enterprise, Chixiao Technology has been repeatedly entrusted with the construction of enclosure systems for major national and local engineering projects.
China Merchants Testing Technology East China Base Project
·Project Materials: 50mm metal-faced rock wool sandwich wall panels cX-RW3/20 (light gray, dark gray), 50mm metal-faced rock wool sandwich wall panels CX-RW3/20 curved panels (light gray, dark gray)
·Total Floor Area: 18,318 square meters
·Project Duration: 5 months
·Project Address: Site of the East China Testing Base of China Merchants Testing, Feixi County, Hefei City, Anhui Province.