DEE DEVELOPMENT ENGINEERS LIMITED — Regulatory Filings 2025

Dec 8, 2025

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Date: 8[th] December, 2025

Listing Compliance Department

BSE Limited The National Stock Exchange of India Ltd. Phiroze Jeejeebhoy Tower, Exchange Plaza, Plot No. C/1, G Block, Bandra Dalal Street, Kurla Complex, Bandra (E), Mumbai – 400001 Mumbai – 400051 Scrip Code: 544198 Symbol: DEEDEV

Subject: Intimation of Updates on the Order Book of the Company

Dear Sir/Ma’am,

Please find enclosed herewith as “Annexure-A” the updates on the Order Book of the Company for the period ranging from 1[st ] November, 2025 to 30[th] November, 2025.

The above information is being made available on the website of the Company www.deepiping.com.

This is for your information and record please.

Yours faithfully,

For DEE Development Engineers Limited Ranjan Digitally signed by Kumar Ranjan Kumar Sarangi Date: 2025.12.08 Sarangi 09:07:32 +05'30'

_________ Ranjan Kumar Sarangi Company Secretary and Compliance Officer Membership No.: F8604 Address: Unit 1, Prithla - Tatarpur Road, Village Tatarpur Dist. Palwal, Faridabad, Haryana – 121 102

DEE DEVELOPMENT ENGINEERS LIMITED

Regd. Office: Unit 1, Prithla-Tatarpur Road, Village Tatarpur, Dist. Palwal, Haryana- 121102, India Works: Unit 1, 2&3, Village Tatarpur, Dist. Palwal, Haryana- 121102, India T: +91 1275 248200, F: +91 1275 248314, E: info@deepiping.com, W: www.deepiping.com CIN: L74140HR1988PLC030225 GST Registration No . 06AACCD0207H1ZA

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			"Annexure A"	"Annexure A"					INR in Crores
Nature of	Name of Company	Customer's	Opening	Order Inflow		Executed	Closing as	Cumulative	Cumulative
Activity		Industry	As on 1st	during November		during	on 30th	Order	Order
			November	2025	including	November	November,	Inflow for	Executed for
			, 2025	Amendments/Cur		2025 #	2025	FY 2025-26	FY 2025-26 (as
					rency			(as of	of November
				Fluctuations				November	30th, 2025)
								30th, 2025)
Pipings	DEE India	Power	351.78		69.56	19.89	401.45	398.14	161.01
		Oil & Gas	865.16		7.02	44.28	827.89	178.15	297.79
		Others*	6.04		0.76	1.13	5.68	32.86	30.67
	DEE Thailand##	Power	29.22		-0.57	3.85	24.80	38.89	39.78
		Oil & Gas	15.73		15.71	3.14	28.30	29.36	42.16
Heavy	DEE Fabricom India	Power	46.19		24.09	28.21	42.07	54.51	58.47
Fabrication
Gas Plants	Molsieve Designs	Others*	3.48		0.06	1.20	2.34	3.79	1.91
	Ltd
Power	DEE India**		-		3.26	3.26	-	22.41	22.41
	Malwa Power**		-		1.53	1.53	-	10.82	10.82
		Total	1,317.61	121.42		106.49	1,332.53	768.93	665.02

• Other Include Process, Chemical, scrap, rent etc.

**There are Power Purchase Agreements (PPA) in place with Punjab State Power Corporation Limited for our Biomass Power Generation business. The average billing for the preceding two fiscal years has been ₹80 crore per year.

The Hon'ble Punjab State Electricity Regulatory Commission (PSERC) had passed an interim Order revising the tariff of Malwa Power Private Limited for a fixed tariff of Rs. 3.50 per unit as the PPA was expired on 26.04.2025, however, the Company had filed the review petition for revision of these tariff rates. Vide PSERC's order dated 18th October 2025, The PPA has been extended for another 10 years. Punjab State Power Corporation Limited (PSPCL) has preferred an appeal against the order of Hon'ble PSERC's on determination of rate of tariff and renewal of PPA, Malwa Power Private Limited has filed caveat in appeal.

Further, earlier, the tariff of DEE Development Engineers Limited (Power Division) were revised to Rs. 5.877 per unit by Hon'ble Punjab State Electricity Regulatory Commission vide its order dated 20.08.2025, however, the Company had filed appeal before hon'ble High Court of Punjab & Haryana against the order of Hon'ble Punjab State Electricity Regulatory Commission.

The Hon’ble High Court, vide its order dated 23rd October 2025, has stayed the operation of the Commission’s order.

a) As a result, the Company shall continue to supply electricity to PSPCL at the prevailing tariff of ₹7.47 per unit. b) Any recovery claimed by PSPCL on account of tariff differential shall remain withheld until the final disposal of the matter by the Hon’ble High Court. Kindly refer our press release dated 24th October 2025 for detailed information in this regard. For ease of understanding, we have considered the order inflow and execution amount to be the same for this period.

The total value of orders executed during the period represents the aggregate amount of invoices raised on customers. However, the revenue recognized under Indian GAAP (Ind AS 115 – Revenue from Contracts with Customers) may differ from the invoiced amount, owing to the application of various Incoterms and performance obligations under respective contracts. Consequently, revenue recognition is aligned with the transfer of control of goods or services to the customer and not merely based on invoicing milestones. Accordingly, the revenue recognized during the reporting period may be lower than the total invoiced value for the same period. ## Exchange rates for existing export orders of DEE Thailand considered INR 3.0294 per THB as on 30th November 2025. source link below: https://www.bot.or.th/en/statistics/exchange-rate.html

DEE DEVELOPMENT ENGINEERS LIMITED

Regd. Office: Unit 1, Prithla-Tatarpur Road, Village Tatarpur, Dist. Palwal, Haryana- 121102, India Works: Unit 1, 2&3, Village Tatarpur, Dist. Palwal, Haryana- 121102, India

T: +91 1275 248200, F: +91 1275 248314, E: info@deepiping.com, W: www.deepiping.com CIN: L74140HR1988PLC030225 GST Registration No . 06AACCD0207H1ZA