Notice Concerning Consolidation of the Group Companies Engaging in Manufacture and Sales of Plastic Compound Products
January 31, 2025
The Mitsubishi Chemical Group (hereinafter, “the MCG Group”) is pleased to announce that it has decided to consolidate wholly-owned subsidiaries of Mitsubishi Chemical Corporation, RHOMBIC CORPORATION (Head Office: Yokkaichi, Mie, Japan; President and Chief Executive Officer: Naoki Ichikawa; hereinafter, “RHOMBIC”) and Dia-Compound Yokkaichi Corporation (Head Office: Yokkaichi, Mie, Japan; President and Chief Executive Officer: Fumio Keitoku; hereinafter, “Dia-Compound”), effective April 1, 2025, by taking the form of an absorption-type merger wherein RHOMBIC is to be the surviving company.
Both RHOMBIC and Dia-Compound have engaged mainly in the domestic manufacture and sales of the MCG Group’s plastic compound products. As a result of consolidation, their business foundations will be strengthened by aggregating their respective knowledge on the plastic compound business that both companies have developed and by connecting technology and manufacturing for further sophistication of manufacturing business.
Going forward, the MCG Group will further develop its plastic compound business by promoting the total capabilities of the group and consistently providing solutions to customers.
1. Overview of the Parties Involved in the Consolidation
2. Overview of the New Company after Consolidation
Both RHOMBIC and Dia-Compound have engaged mainly in the domestic manufacture and sales of the MCG Group’s plastic compound products. As a result of consolidation, their business foundations will be strengthened by aggregating their respective knowledge on the plastic compound business that both companies have developed and by connecting technology and manufacturing for further sophistication of manufacturing business.
Going forward, the MCG Group will further develop its plastic compound business by promoting the total capabilities of the group and consistently providing solutions to customers.
1. Overview of the Parties Involved in the Consolidation
| Company Name | RHOMBIC CORPORATION | Dia-Compound Yokkaichi Corporation |
| Address of Head Office | 191-1, Shiohama, Yokkaichi, Mie, Japan | 1000, Kawajiri-cho, Yokkaichi, Mie, Japan |
| Representative | Naoki Ichikawa, President and Chief Executive Officer | Fumio Keitoku, President and Chief Executive Officer |
| Paid-in Capital | 300 million yen | 300 million yen |
| Net sales | 19.2 billion yen (Actual result of FY 2023) | 9.8 billion yen (Actual result of FY 2023) |
| Number of Employees | 525 (as of December 31, 2024) | 58 (as of December 31, 2024) |
| Business Description |
・Plastics (Contract manufacturing of plastic compound products) ・Plastics sales (Sales of PP/PE, and development, manufacturing and sales of a variety of masterbatches) ・Plastics inspection and analysis (Analysis and assessment of various kinds of plastics and quality reviews of plastic products) ・Logistics (Distribution processing, storage, transportation, logistics container management) |
・Manufacturing and sales of engineering plastic compound |
| Manufacturing Bases | Yokkaichi Plant, Kashima Plant, Mizushima Plant, Saitama Plant, Nagoya Plant, and Amaike Plant | Head Office Plant (Kawajiri-cho, Yokkaichi) |
2. Overview of the New Company after Consolidation
| Company Name | RHOMBIC CORPORATION |
| Address of Head Office | 191-1, Shiohama, Yokkaichi, Mie, Japan |
| Representative | Naoki Ichikawa, President and Chief Executive Officer |
| Paid-in Capital | 300 million yen (Wholly owned by Mitsubishi Chemical Corporation） |
| Number of Employees | 583 (Combined number as of December 31, 2024) |
| Manufacturing Bases | Yokkaichi Plant, Kashima Plant, Mizushima Plant, Saitama Plant, Nagoya Plant, Amaike Plant, and Kawajiri Plant |
