ENVALITH
中外炉工業株式会社 logo

Chugai Ro Co., Ltd.

1964Prime MarketConstruction

中外炉工業株式会社 logo
Chugai Ro Co., Ltd.1964

Heat Treatment Business

The company's largest segment, centered on heat treatment furnaces for automobiles, batteries, and semiconductors

PeriodCurrentPreviousChange
Net sales (FY2025 full year, ending March 2025)¥18,590 million¥13,912 million
Operating income (FY2025 full year, ending March 2025)¥1,500 million¥606 million
Orders received (FY2025 full year, ending March 2025)¥18,319 million¥18,929 million (estimate)
Order backlog (end of FY2025, March 2025)¥14,435 million¥13,648 million (end of prior 3Q)
Depreciation (FY2025 full year, ending March 2025)¥290 million¥232 million

Business Details

Engages in the design, manufacture, construction, and sale of heat treatment furnaces for automobiles, machinery, semiconductors, and chemical materials, heat treatment equipment for EV/HV battery and motor parts manufacturing processes, heat treatment furnaces for semiconductor-related functional materials, and air purification equipment. The parent company itself is the main entity involved, accounting for approximately 51% of consolidated net sales (FY2025, ending March 2025), making it the largest segment. The business is characterized mainly by custom-made products, which offer strong appeal to customers and make price pass-through relatively easy.

Recent Overview

Cumulative 3Q net sales rose 4.2% year on year to ¥12,469 million; operating income was ¥289 million

In the nine months ended December 2025 (Q1-Q3 of FY2026, ending March 2026), net sales were ¥12,469 million (up 4.2% year on year). Meanwhile, operating income decreased 33.7% year on year to ¥289 million. Orders received were ¥11,699 million (up 7.3% year on year), with contracts secured for next-generation battery-related heat treatment equipment and electric heating-type machine parts heat treatment equipment. This included a ¥77 million negative impact on operating income from the recognition of a provision for warranties on completed construction contracts (due to a change in accounting estimates). For the full fiscal year (FY2025, ended March 2025), the segment achieved net sales of ¥18,590 million (133.6% of the prior year) and operating income of ¥1,500 million.

Key Products

product
Heat Treatment Equipment for EV/HV Battery and Motor Parts

Heat treatment equipment used in the manufacturing processes of key components such as batteries (including next-generation batteries) and motors for EVs and HVs. Includes solid electrolyte heat treatment equipment and next-generation battery-related manufacturing equipment. As a core product addressing carbon neutrality, the company is actively proposing and winning orders for this equipment.

product
Heat Treatment Furnaces for Semiconductors and Functional Materials

Includes semiconductor-related functional material heat treatment furnaces, electronic component heat treatment furnaces, and magnetic material heat treatment furnaces, as well as next-generation solar cell manufacturing equipment. The company applies its proprietary technology to advanced materials requiring high precision and high functionality, leading to continuous order intake.

product
Heat Treatment Equipment for Automobiles

Includes heat treatment equipment for aluminum automotive parts, non-oxidizing heat treatment equipment, and carburizing furnaces. Primarily designs, manufactures, and constructs equipment for domestic automakers, also capturing ongoing demand for equipment upgrades and retrofits from existing customers.

product
Air Purification Equipment (Regenerative Thermal Oxidizer)

Air purification equipment centered on regenerative thermal oxidizers (RTOs). This environmental equipment treats exhaust gases such as VOCs generated in manufacturing processes, with continued demand driven by tightening regulations.

product
Heat Treatment Equipment for Aircraft-Related Materials

Specialized equipment used for heat treatment of aircraft-related materials. A new field for which orders were secured in FY2025 (ending March 2025), positioned as a demand source following automobiles and batteries.

Growth Drivers

  • Robust demand for heat treatment equipment used in next-generation battery and motor parts manufacturing processes for EVs and HVs
  • Expansion of heat treatment equipment for functional materials, including semiconductors and next-generation solar cells
  • Capital investment demand related to carbon neutrality initiatives (hydrogen/ammonia fuel technology, electrification, and energy efficiency)
  • Strengthening of R&D capabilities through the "Thermal Technology Innovation Center" and acquisition of new orders through joint development with internal and external partners
  • Progress in price pass-through, supported by the strong appeal of custom-made products, and reductions in procurement costs

Risks

  • Orders received declined slightly to 96.8% of the prior year in FY2025 (ended March 2025), suggesting a pause in the buildup of the order backlog
  • Risk of cost pressure if rising labor and raw material costs continue
  • Risk of demand fluctuation due to changes in the pace of EV adoption in the automotive industry (changes in major customers' capital investment plans)
  • Risk of deteriorating project profitability, such as changes in estimates for provisions for warranties on completed construction contracts (operating income declined 33.7% year on year in cumulative 3Q)
  • Increasing reliance on domestic demand due to a decline in the overseas sales ratio (overseas sales decreased year on year in cumulative 3Q)

Last updated: June 15, 2026