Japanese chemical and industrial group with plastics solutions, environmental and water infrastructure, and industrialized housing construction.
SEKISUI CHEMICAL CO., LTD.
Tokyo, JapanNew on Amplifa
About SEKISUI CHEMICAL
SEKISUI CHEMICAL CO., LTD. is a Japanese group (Kabushiki Kaisha) founded in 1947, headquartered in Tokyo with 26,752 employees. The company is organized into the business segments Housing and Social Infrastructure (including industrialized house building with the modular Unit Construction Method via SEKISUI HEIM), Urban Infrastructure & Environmental Products (water and environmental infrastructure) as well as Chemical Solutions with High Performance Plastics for transportation/automotive, electronics and healthcare. In the fiscal year ending March 2026, the group achieved consolidated net sales of JPY 1,309,281 million with 155 companies and an operating profit of JPY 106,477 million. As early as 1963, SEKISUI CHEMICAL became the first Japanese manufacturer to establish a production site in the USA; today the group maintains companies in the Americas (18), Europe (16), Japan (91) as well as Asia & Oceania (30). In September 2026, the majority stake in the Australian Ausbuild Group was acquired in order to expand modular construction internationally.
- Site
- Tokyo, Japan
- Processes
- Modular construction / Unit Construction Method (industrialized house building), Residential housing and building materials (Industrialized building/modular construction, SEKISUI, Water and environmental infrastructure, Chemical solutions (High Performance Plastics) among others for vehicles, electronics, healthcare
- Materials
- High Performance Plastics, Modular Construction (Unit Construction Method)
- Founded
- 1947
- Employees
- 26752
- Industries
- Residential housing/home construction, Social infrastructure and urban development products, Environmental/water infrastructure, Transportation/Automotive, Electronics, Healthcare
- 01
Research & development
- 02
Manufacture of High Performance Plastics and infrastructure products
- 03
Prefabrication of standardized building components in the factory (Unit
- 04
Assembly and erection on site
- 05
Sales and service worldwide
Materials and Processes
High Performance Plastics
Chemical solutions for the transportation/automotive, electronics and healthcare industries.
Modular Construction (Unit Construction Method)
Standardized components are prefabricated in specialized factories, reducing construction work on the building site.
Locations
Tokyo
JPGroup headquarters
- Materials
- Kunststoff
Products and Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Modular construction / Unit Construction Method (industrialized house building)Assembly | – | – | – | – | Kunststoff, Others |
Additional services
Company History
- 1947
Foundation of SEKISUI CHEMICAL; as of the fiscal year ending March 2026, the company has existed for 79 years.
- 1963
As the first Japanese manufacturer, establishment of a production site in the USA; since then active expansion of overseas business.
- 1989
Establishment of the subsidiary SEKISUI HEIM CO., LTD. (December 1, 1989).
- 2026
Acquisition of 51% of the shares in Ausbuild Group (Queensland, Australia) via SEKISUI HEIM AUSTRALIA AC PTY LTD as well as capital increase at SEKISUI HEIM CO., LTD. as regional management company for the Greater Tokyo area.