DEE DEVELOPMENT ENGINEERS LIMITED

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Date: 17[th] May, 2025

Listing Compliance Department

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

Sub: Disclosure under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“SEBI Listing Regulations”)

Pursuant to Regulation 30 of SEBI Listing Regulations, we would like to inform that the Company has been awarded Order from a New Customer, the name of which cannot be disclosed due to commercial issue.

The details as required under SEBI Listing Regulations read with Circular no. SEBI/HO/CFD/CFD-PoD-1/P-CIR//2023/123 dated July 13, 2023 are enclosed as Annexure I .

This is for your information and record please.

Yours faithfully,

For DEE Development Engineers Limited

Digitally signed by RANJAN KUMAR RANJAN KUMAR SARANGI SARANGI Date: 2025.05.17 17:14:00 +05'30'

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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

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: [email protected], W: www.deepiping.com CIN: L74140HR1988PLC030225 GST Registration No . 06AACCD0207H1ZA

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Annexure – I

Disclosure of Information pursuant to Regulation 30 of the SEBI Listing Regulations read with SEBI circular No. SEBI/HO/CFD/CFD-PoD-1/P/CIR/2023/123 dated July 13, 2023:

S.NO.	PARTICULARS	DETAILS
a	Name of the entity awarding the order(s) / contract(s)	One largest internation company in Oil & Gas with headquarters in the US, However, due to commercial issue, the Company cannot disclose the name of the Customer
b	Significant terms and conditions of order(s)/contract(s) awarded in brief	A consistent and recurring pipeline of orders for DEE Development Engineers Limited (“DDEL”) process piping solutions across Customer’s global projects. Enhanced visibility and brand recognition in the international oil & gas infrastructure market. Strengthened positioning of DDEL as a preferred vendor for globally reputed energy companies. Reflects Customer’s trust in DDEL’s technical expertise, execution capabilities, and quality excellence. Below are the salient features of this agreement: • A consistent and recurring pipeline of orders for DDEL’s process piping solutions across customer’s global projects. • Enhanced visibility and brand recognition in the international oil & gas infrastructure market. • Strengthened positioning of DDEL as a preferred vendor for globally reputed energy companies. • Reflects trust in DDEL’s technical expertise, execution capabilities, and quality excellence. This partnership aligns perfectly with DDEL’s vision to deliver world-class engineering solutions to marquee global clients and to contribute meaningfully to large-scale, energy-intensive infrastructure projects worldwide.