Siam Cement Group
Thailand's oldest major cement and building-materials group, with businesses spanning construction materials, chemicals, and packaging.
Last updated August 31, 2026
Overview
Siam Cement Group, commonly known as SCG, is a Thai industrial group whose origins lie in the establishment of the country's first cement plant in 1913. Created under a royal decree issued by King Rama VI, the enterprise developed alongside Thailand's modernization and construction needs and became the country's largest and oldest cement and building-materials company. Although the name Siam Cement remains strongly associated with cement, the modern group operates across three principal business areas: SCG Cement-Building Materials, SCG Chemicals, and SCG Packaging. The cement and building-materials business covers cement, concrete, mortar, construction products, and related solutions for residential, commercial, and infrastructure projects. The chemicals business produces and develops petrochemical and polymer-related products, while the packaging business supplies paper-based, flexible, and other packaging solutions. This portfolio gives SCG exposure to construction, manufacturing, consumer goods, and industrial supply chains rather than limiting the group to a single building-material category. SCG has expanded beyond Thailand through manufacturing facilities, investments, joint ventures, and sales networks across Southeast Asia. Its regional activities have included packaging operations in Malaysia, cement plants in several countries, and a petrochemical complex in Vietnam. The group also exports products to markets outside the region. Its investment structure has included partnerships with international companies in areas such as agricultural machinery, steel, automotive components, tires, petrochemicals, and industrial materials. Research and innovation are central to SCG's positioning. Siam Research and Innovation Co., Ltd. works on technologies and products related to cement, mortar, concrete, construction materials, 3D printing, prefabrication, recycled aggregate, and refractory materials. The group has reported research-and-development spending equivalent to about one percent of sales in the referenced period, while value-added products represented a substantial and increasing share of sales. SCG Chemicals' 2014 acquisition of a majority stake in Norner supported the development of plastic and polymer technology. SCG is also a major employer and an active corporate sponsor. The referenced profile reported approximately 54,000 employees and described SCG as a leading graduate employer in Thailand. Its sponsorship activities have included football, badminton, and golf events in Thailand and Southeast Asia. The group is publicly listed on the Stock Exchange of Thailand and is included in major Thai market indices. Its public-company identity, long operating history, regional expansion, and broad industrial portfolio make it one of Thailand's most prominent corporate brands.
History
Siam Cement Group was established in 1913 after King Rama VI issued a royal decree to create Thailand's first cement plant in Bangkok. The founding reflected the country's need for domestic construction materials during a period of infrastructure development and institutional modernization. Cement production gave the company a strategic role in the growth of Thailand's built environment and provided the foundation for its later corporate identity. Over the following decades, Siam Cement expanded from its original cement activity into a broader industrial group. Its development followed the increasing complexity of Thailand's economy: construction required not only cement but also concrete, mortar, masonry products, roofing, finishing materials, and integrated building solutions. SCG consequently developed a cement-and-building-materials platform serving both professional construction and broader building markets. The group later diversified into chemicals and packaging. SCG Chemicals became involved in petrochemicals, plastics, and polymer technology, while SCG Packaging developed paper-based and other packaging businesses. This diversification reduced the group's dependence on cement cycles and connected it to manufacturing and consumer-goods supply chains. The three-business structure—cement and building materials, chemicals, and packaging—became the principal framework for describing the modern group. SCG also pursued regionalization. It invested in manufacturing and packaging businesses in Southeast Asia, including packaging operations in Malaysia, cement facilities in regional markets, and a petrochemical complex in Vietnam. The group has used joint ventures and strategic partnerships with international companies to broaden technical capabilities and market access. Referenced partners have included companies associated with agricultural machinery, steel, automotive components, tires, petrochemicals, and other industrial fields. Innovation became an increasingly explicit part of SCG's strategy. Siam Research and Innovation Co., Ltd. has worked on cement, mortar, concrete, building materials, 3D printing, prefabrication, recycled aggregate, and refractory applications. The group reported research spending of approximately one percent of sales in 2016, with value-added products contributing more than one-third of sales at that time and approaching two-fifths in 2017. In 2014, SCG Chemicals acquired a 51 percent interest in Norner to strengthen plastic and polymer research and development. By the 2010s, SCG had become one of Thailand's most prominent public companies, with approximately 54,000 employees, substantial regional operations, and products marketed domestically and internationally. It was included in the SET50 and SETHD indices and was recognized in corporate, employment, and intellectual-property rankings. Its sponsorship of football, badminton, and golf events further extended the SCG brand into public life in Thailand and Southeast Asia. The group's current identity therefore combines a century-old cement heritage with a diversified industrial portfolio in construction materials, chemicals, and packaging.
- 2017Value-added products approach two-fifths of sales
The referenced profile reported that high-value-added products accounted for nearly 40% of sales, reflecting SCG's emphasis on innovation and differentiated products.
- 2016SCG recognized in corporate and employment rankings
The group was reported among Thailand's largest public companies and as the leading graduate employer in Thailand in the referenced rankings.
- 2014SCG Chemicals acquires a majority stake in Norner
SCG Chemicals acquired 51% of Norner to support research and development in plastics and polymer technology.
- 1913Royal decree establishes Siam Cement
King Rama VI authorized the establishment of Thailand's first cement plant in Bangkok, creating the foundation of Siam Cement Group.
Products and positioning
A large, established, innovation-oriented Thai industrial group offering construction materials, chemicals, and packaging across Thailand and Southeast Asia.
SCG Cement and ConcreteCement and construction materials1913
SCG's original and best-known business area supplies cement, ready-mix concrete, mortar, and related construction materials. These products support residential construction, commercial buildings, infrastructure, and industrial projects. The business has expanded beyond commodity cement into application-oriented materials and construction solutions.
SCG Building MaterialsBuilding materials
The building-materials portfolio includes products and systems used in the construction and finishing of buildings. It extends the group's cement heritage into broader solutions for walls, floors, roofs, interiors, and other building applications. The business serves construction professionals as well as broader building markets in Thailand and regional markets.
SCG ChemicalsChemicals and polymers
SCG Chemicals covers petrochemical, plastic, and polymer-related activities. Its products serve industrial manufacturers and other downstream users. Research capabilities, including the Norner investment, support the development of higher-value materials and technology-oriented polymer applications.
SCG PackagingPackaging
SCG Packaging supplies packaging products and services, including paper-based and flexible packaging solutions. The business has regional reach and has been expanded through investments and operations in Southeast Asia, including Malaysia. It connects SCG with consumer-product, manufacturing, logistics, and industrial customers.
Flagship businesses
- Cement
- Concrete
- Mortar
- Building materials
- Chemicals and polymers
- Packaging
- SCG Cement and Building Materials
- SCG Chemicals
- SCG Packaging
- SCG research and innovation services
Marketing campaigns
- Sports sponsorship program
Thailand · Southeast Asia
SCG has sponsored football, badminton, and golf events as part of its public-facing brand and community engagement activities.
Outcome. The sponsorships increased the visibility of the SCG name in Thai and Southeast Asian sports.
Brand decisions
- 2014Acquisition of a majority stake in NornerM&A
SCG Chemicals sought to strengthen its technical and research capabilities in plastics and polymer technology.
What changed. SCG Chemicals acquired 51% of Norner.
Aftermath. The transaction expanded SCG's research platform for polymer and plastic innovation.
- 1913Establishment of domestic cement productionStrategy
Thailand required domestic capacity for construction materials, and the royal decree established the country's first cement plant in Bangkok.
What changed. Siam Cement was created as a cement producer under royal authorization.
Aftermath. The decision became the foundation for the group's century-long expansion into construction materials and other industrial businesses.
Recent events
- 2017SCG received Asia IP Elite recognition
SCG was reported to have received the Asia IP Elite 2016 award for the third consecutive year, recognizing strategic intellectual-property management.
Other - 2016SCG ranked among Thailand's largest public companies
The referenced profile identified SCG as the second-largest company in Thailand and the 604th-largest public company globally in a Forbes ranking for 2016.
Other - 2016SCG recognized as a leading graduate employer in Thailand
SCG was reported as the number-one graduate employer in Thailand in a poll conducted by Asia Internship Program.
Other - 2014SCG Chemicals acquired a majority stake in Norner
SCG Chemicals acquired 51% of Norner to strengthen research and technology capabilities in plastics and polymer development.
M&A - 1913SCG founded Thailand's first cement plant by royal decree
King Vajiravudh authorized the establishment of the enterprise that became Siam Cement Group to develop Thailand's first cement plant in Bangkok.
Other - SCG expanded into chemicals and packaging as core businesses
The company developed from a cement producer into a group organized around cement and building materials, chemicals, and packaging.
Other - SCG continued Southeast Asian investment
The group invested in Malaysian packaging operations, a Vietnamese petrochemical complex, and cement plants in regional markets.
Other - SCG sponsored sports in Thailand and Southeast Asia
SCG supported football, badminton, and golf events as part of its regional brand and community presence.
Campaign
Sources
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