SCCC is Thailand’s second-largest cement manufacturer with a market share of approximately 28%.

Other Siam City Cement group companies are
- Siam City Concrete (Ready-mixed concrete)
- CONWOOD (Wood replacement products)
- Khmer Cement Industry (Cement Trading)
- Siam City Power (Electricity generation)
- INSEE SUPERBLOCK (Light weight block)
- Energy and Environment Services
- Lanna Resources (Coal production and distribution)

The SCCC group companies employ approximately 3,000 people and SCCC is a major employer in the Saraburi area. Some 40% of households in the four communities adjacent to the plant have family members employed by SCCC.

SCCC has an annual cement production capacity of about 14.5 million tonnes. SCCC produces the popular INSEE or ‘Eagle’ family of cements - INSEE Dang, INSEE Petch, INSEE Dum, INSEE Fah, INSEE Poon Keaw and INSEE Tong. INSEE Tong, Thailand’s first specialised masonry and plastering cement, was launched in March 2003. SCCC also produces INSEE Mortar Max (launch in 2005) ready-to-use mortar for several applications: Fine plastering, General plastering, Light Weight Block plastering, Cement Plastering, Normal Bricklaying, Light Weight Block Bricklaying, Floor Leveling and many types of Tile Fix.

The history of modern cement began in 1824 when an English mason, Joseph Aspdin, patented what he termed ‘Portland cement’ (naming it after the colour of Portland stone). Aspdin's process – which forms the heart of that used worldwide today - mixed precise quantities of crushed limestone and clay before incineration at very high temperature, transforming the mixture into a chemically-distinct compound known as clinker. Today, as then, the resultant clinker is mixed with small amounts of gypsum (to regulate setting time) and grind to a fine powder, giving a predictable, known product of consistently high quality. Portland cement manufacture requires some 80 separate and continuous operations, the use of a great deal of heavy machinery and equipment, and large amounts of heat and energy. Capital investment in the cement industry is among the highest in all industries.

SCCC has no fixed dividend policy but seeks to maximize return to shareholders through group business operations.

SCCC emissions monitoring systems are among most comprehensive and advanced in the Thai cement industry, allowing average levels of main stack emissions to remain consistently well below permitted limits. No less than 488 Bag Filter units and 35 Electrostatic Precipitators have been installed to reduce dust levels. Dust levels and other air quality indices are regularly monitored at nine locations in communities within 5km of the plant. SCCC has been ISO9002 certified since 1997, ISO14001 certified since 1998, TIS18001 certification (OH&S) certified since 2001, ISO/IEC17025 certified since 2002 and ISO9001 certified since 2004

Nearly 200,000 trees were planted on 1,940 rai (310 hectares) of land in 1995 and 2000 to mark HM The King’s Birthday and SCCC is now actively supporting the Royal Forestry Departments Phu Kae Depleted Forest rehabilitation project. In addition to this project, approximately 1,700 rai (272 hectares) of quarried land is to be rehabilitated over the next 10 years Please find more information of environmental activities in the Sustain Development Report 2006