Diffusion Engineers Limited — Q4 FY25 earnings call

Call held 16 May 2025

Management summary

Diffusion Engineers reported strong Q4 and FY25 results, with significant revenue and margin growth driven by robust demand from core sectors and improved product mix. The company is investing ₹100 crores to double its capacity, with new facilities expected by year-end FY25. Management highlighted a strategic shift towards higher-margin heavy engineering and wear parts, alongside efforts to increase exports and service revenue, despite challenges from commodity price volatility affecting an associate company.

Highlights

  • Revenue of ₹102.45 crores in Q4 FY25, up 38.55% YoY, driven by strong demand and successful cross-selling.

  • EBITDA margin expanded 346 bps to 14.35% in Q4 FY25, reflecting improved product mix and cost efficiency.

  • Full year FY25 revenue grew 20.51% YoY to ₹335.20 crores, with EBITDA increasing 21.12% YoY to ₹47.08 crores.

  • Company is undertaking a ₹100 crore capex to double its capacity, with new plants expected to be operational by year-end FY25.

  • Strategic focus on higher-margin heavy engineering and wear parts, and increasing export sales.

Concerns

  • The UK-based associate company incurred a loss in the previous year due to nickel price volatility, impacting consolidated financials.

  • Working capital days remain high at 90-95 days due to long manufacturing cycles in heavy equipment.

Key financials

  1. Revenue ₹102.448 Cr +38.6%YoY
  2. EBITDA ₹14.701 Cr +82.5%YoY
  3. EBITDA Margin 14.3%
  4. PAT ₹13.01 Cr +41.8%YoY
  5. Net Revenue (FY) ₹335.196 Cr +20.5%YoY
  6. EBITDA (FY) ₹47.076 Cr +21.1%YoY
  7. EBITDA Margin (FY) 14%
  8. PAT (FY) ₹36.04 Cr +17%YoY
  9. PAT Margin (FY) 10.8%

What they filed

Q1 FY27: revenue up 35.8%, net profit up 41.7% against the same quarter last year.

₹ Cr · quarterly
Line itemQ2 FY25Q3 FY25Q4 FY25Q1 FY26Q2 FY26Q3 FY26Q4 FY26Q1 FY27
Revenue82 79 103 81 84 +2%101 +28%142 +38%110 +36%
EBITDA11 10 15 11 12 +9%14 +40%21 +40%14 +27%
Net profit9 7 13 12 10 +11%12 +71%16 +23%17 +42%
How to read this

₹ crore, as filed. The percentage beside a figure is the change against the same quarter a year earlier — never the quarter before, which would make every seasonal business look like it collapses and booms each year.

Order book

medium confidence

Total value

₹103 Cr

as of 2025-05-16 quantified

Execution

For heavy engineering, turnaround time from PO to delivery is around 3-9 months, with additional 90-100 days for payment.

The order book is increasing, with repeated customers accounting for much more than 50% of the orders.

Source: Q&A

Capital allocation

high confidence
  • Capex ₹100 Cr New plan — capacity doubling · IPO proceeds
    • Heavy engineering unit at Nimji ₹70 Cr
    • Manufacturing unit at B33 MIDC ₹30 Cr
    Total of INR 100 crores is what we are doing. ... One is a heavy engineering unit or at a location called as Nimji. And there we are spending close to INR70 crores and another location is at B33 MIDC, there we are approximately spending INR30 crores.
  • Debt Debt disclosed
    • Repayment IPO proceeds used for reduction of working capital, leading to some interest cost benefit.
    We have not used our I would say, IPO proceeds for any payments of all the vendors or debtors because the objects wanted reduction of working capital, which we did. So, there was some benefit of interest because this year interest cost had been very high compared to last year. So, there was some impact of interest, which we got and due to IPO...
  • Liquidity Liquidity disclosed IPO proceeds and free cash flow are being invested, with IPO proceeds used for working capital reduction.
    We have not used our I would say, IPO proceeds for any payments of all the vendors or debtors because the objects wanted reduction of working capital, which we did. So, there was some benefit of interest because this year interest cost had been very high compared to last year. So, there was some impact of interest, which we got and due to IPO... The mutual fund investment, which you are seeing, is from our own free cash flow, which we have done.

Guidance & targets

Revenue

  • Revenue Growth Revenue · Annual · Medium confidence >13%
    Generally, we do not give forward looking numbers, but definitely our aim is to grow more than the market.

    — Ramesh Kumar N

  • Service Revenue Contribution Revenue · Going forward · High confidence Larger part
    Yes, 100%. We have started critical services wherein, you know, which are very important for the running of the plants of our customer. And this is also a very good sort of door opener with our customers where when we enter with such services, service offerings to our customers, it helps us get related business or business for other divisions in the company.

    — Prashant Garg

Profitability

  • EBITDA Margin Profitability · Ongoing · Medium confidence Improvement
    Yes. Yes. We will try to improve our margins.

    — Abhishek Mehta

Capacity

  • Manufacturing Capacity Capacity · End of FY25 · High confidence Doubled
    So, basically, we are approximately doubling our capacity. So, it will happen by end of this year, this financial year.

    — Abhishek Mehta

Efficiency

  • Asset Turnover on New Capex Efficiency · Post-commissioning · High confidence 3x
    Yes. Our historical asset turn has been around 3 to 3.25 times and we expect the same asset turn.

    — Prashant Garg

Investment

  • R&D Spend as % of Revenue Investment · Ongoing · High confidence ~1%
    We spend close to around 1% of our revenue as of now in R&D.

    — Prashant Garg

What to watch in Q1 FY26

New Capacity Commissioning

End of FY25
Current Under construction
Target Operational

Why it matters

Successful commissioning is key to realizing planned capacity doubling and future revenue growth.

So, basically, we are approximately doubling our capacity. So, it will happen by end of this year, this financial year.

Risks & concerns

  • Commodity price volatility impacting associate company

    medium

    The UK-based associate company experienced losses in the previous year due to significant corrections in nickel costs, highlighting exposure to volatile metal prices.

    Management acknowledged

  • High working capital intensity

    medium

    The nature of the heavy engineering business involves long manufacturing cycles (6-9 months) and payment cycles (90-100 days), leading to inherently high working capital requirements.

    Management acknowledged

Q&A highlights

6 direct, 1 evasive
EBITDA margins for business verticals Evasive
Generally, we do not give a breakup of this, because these are all product mix, the way it all depends on the product mix and all. So, we do not declare the product-wise EBITDA margins.

Management declined to provide segment-wise EBITDA margins, making it difficult for analysts to assess profitability drivers for different business lines.

Asked by Mahesh Atal

Increase in employee costs Direct
So, basically, we are gearing up for our capex. And for this purpose, we have already started recruitments. So, this is the reason employee costs have gone up a bit.

Management clarified that the increase in employee costs is linked to strategic capex plans and associated recruitment, indicating investment in future growth.

Asked by Mahesh Atal

Revenue potential and asset turnover of new capacity Direct
So, basically, we are approximately doubling our capacity. So, it will happen by end of this year, this financial year. And within next two to three years, we will be able to achieve around 80-85% capacity. So, and then our asset turnover as of today is around three times and we expect it to remain in the same level as it is.

Management provided clear targets for capacity doubling, utilization, and asset turnover for the new capex, offering visibility on future operational efficiency and revenue generation.

Asked by Mahesh Atal

Working capital days Direct
Working capital would remain in the same level because we are also into heavy equipments and other things. And the payment cycle is around 90-100 days. Working capital would remain in that period only. And also because the manufacturing time for heavy equipment is around 6-9 months, which increases my inventory period also.

Management explained that high working capital days are inherent to the business due to long manufacturing cycles and payment terms in the heavy equipment sector.

Asked by Ankur Gulati

Impact of IPO proceeds on interest cost and margins Direct
We have not used our I would say, IPO proceeds for any payments of all the vendors or debtors because the objects wanted reduction of working capital, which we did. So, there was some benefit of interest because this year interest cost had been very high compared to last year. So, there was some impact of interest, which we got and due to IPO...

Management confirmed that IPO proceeds were utilized to reduce working capital, leading to a positive impact on interest costs and indirectly supporting margin improvement.

Asked by Ankur Gulati

Top line breakdown by product categories and associated margins Partial
So, three product baskets are heavy engineering, welding and anti-wear consumables and wear plates and wear parts. And each of them sort of are almost equal in terms of the revenue contribution. ... No. Different divisions have got different EBITDA margins. On qualitative terms, anti-wear and welding consumables offer higher margins in comparison to wear plates and wear parts and heavy engineering.

While not providing exact numbers, management indicated that all three main product categories contribute almost equally to revenue, but with varying margin profiles, with consumables offering higher margins.

Asked by Rohan Mehta

Profitability and integration of UK-based associate company Direct
So, we are one of the founding shareholders of that company and the intention was to and as I mentioned in my earlier introduction, the products which are manufactured, there are high price, high performance products. So, it was sort of a good complementary addition to the products that we are supplying in India. So, the intention was to get involved in a manufacturing unit right from day one rather than just buying and selling it in the industry.

Management clarified the strategic rationale behind the investment in the UK associate, emphasizing its role in providing high-performance, complementary products and Diffusion's exclusive channel partnership in Southeast Asia.

Asked by Avadhoot Joshi

Potential for service revenue to become a larger part of the business Direct
Yes, 100%. We have started critical services wherein, you know, which are very important for the running of the plants of our customer. And this is also a very good sort of door opener with our customers where when we enter with such services, service offerings to our customers, it helps us get related business or business for other divisions in the company.

Management expressed strong confidence in the growth of service revenue, highlighting its strategic importance as a recurring income stream and a gateway for cross-selling other products.

Asked by Ishpreet Kaur

2 min read 6 chapters

Detailed narrative

Strong Q4 and FY25 Financial Performance

Diffusion Engineers reported robust financial results for Q4 FY25, with revenue increasing by 38.55% YoY to ₹102.45 crores. EBITDA, excluding other income, grew by 82.55% YoY to ₹14.70 crores, and the EBITDA margin expanded by 346 basis points to 14.35%. For the full year FY25, net revenue reached ₹335.20 crores, a 20.51% YoY increase, while EBITDA grew 21.12% YoY to ₹47.08 crores, with a margin of 14.04%. Profit after tax for FY25 stood at ₹36.04 crores, up 17% YoY, with a PAT margin of 10.75%.

Strategic Capacity Expansion and Capex Plans

The company is undertaking a significant capex of ₹100 crores to double its manufacturing capacity, with new facilities expected to be operational by the end of FY25. This investment includes approximately ₹70 crores for a heavy engineering unit in Nimji and ₹30 crores for a unit at B33 MIDC. Management anticipates reaching 80-85% capacity utilization within the next 2-3 years, maintaining an asset turnover ratio of around 3x. This expansion is crucial for meeting growing demand and enhancing capabilities across all three business segments.

Evolving Product Mix and Margin Dynamics

Diffusion Engineers operates across three main product baskets: heavy engineering, welding and anti-wear consumables, and wear plates and wear parts, with each contributing almost equally to revenue. While the company does not disclose segment-wise EBITDA margins, management indicated that anti-wear and welding consumables generally offer higher margins compared to wear plates/parts and heavy engineering. The strategy involves growing the heavy engineering and wear parts business faster than consumables, while also focusing on increasing exports and service offerings to improve overall margins.

International Presence and R&D Focus

The company has expanded its global footprint, exporting to over 30 countries and maintaining subsidiaries and partnerships in Singapore, Turkey, Philippines, UK, and Malaysia. A UK-based associate company, LSN Diffusion Limited (21.5% owned), manufactures thermal spray powders, which are high-performance products complementary to Diffusion's offerings. The company maintains a strong R&D focus, spending approximately 1% of its revenue on DSIR-certified labs, which is critical for product innovation and meeting the increasing performance demands of core industrial customers.

Working Capital Management and IPO Impact

The company's working capital days remain around 90-95 days, attributed to the long manufacturing cycles (6-9 months) and payment terms (90-100 days) inherent in the heavy engineering sector. IPO proceeds were strategically utilized to reduce working capital, which contributed to a reduction in interest costs. Additionally, the company has invested free cash flow in mutual funds, demonstrating prudent financial management post-IPO.

Sustainability Initiatives and Service Expansion

Diffusion Engineers is actively pursuing sustainability initiatives, including monitoring energy and fuel consumption, tree planting, and planning to install a 1.1 megawatt captive rooftop solar plant at its Nimji unit. The company is also expanding its industrial services, offering critical breakdown and repair services, kiln alignment, and other solutions. Management expects service revenue to become a significantly larger part of the business going forward, acting as a strategic 'door opener' for other divisions and enhancing customer relationships.

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