Sinopec Engineering Group Co Ltd. — Capital/Financing Update 2013

May 10, 2013

This announcement and the information contained herein does not constitute an offer of securities for sale in the United States. Securities may not be offered, sold or delivered within the United States without registration or an exemption from registration under the United States Securities Act of 1933, as amended. There is not and it is currently not intended for there to be any public offering of securities of the Company in the United States.

This announcement is for information purposes only and does not constitute an invitation or offer to acquire, purchase or subscribe for securities. Potential investors should read the prospectus dated May 10, 2013 (the “ Prospectus ”) issued by SINOPEC Engineering (Group) Co., Ltd. (the “ Company ”) for detailed information about the Global Offering described below before deciding whether or not to invest in the Offer Shares thereby being offered. Hong Kong Exchanges and Clearing Limited, The Stock Exchange of Hong Kong Limited (the “ Hong Kong Stock Exchange ”) and Hong Kong Securities Clearing Company Limited (“ HKSCC ”) take no responsibility for the contents of this announcement, make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement.

In connection with the Global Offering, Goldman Sachs (Asia) L.L.C. or its affiliates or any person acting for it (the “ Stabilizing Manager ”), on behalf of the Underwriters, may over-allocate or effect transactions with a view to stabilizing or supporting the market price of the Offer Shares at a level higher than that which might otherwise prevail for a limited period which begins on the Listing Date and ends on the thirtieth day after the last day for the lodging of applications under the Hong Kong Public Offering. However, there is no obligation on the Stabilizing Manager, its affiliates or any person acting for it to conduct any such stabilizing action. Such stabilization may be effected in all jurisdictions where it is permissible to do so, in each case in compliance with all applicable laws and regulatory requirements, including the Securities and Futures (Price Stabilizing) Rules made under the Securities and Futures Ordinance (Chapter 571 of the Laws of Hong Kong). Such stabilization, if commenced, will be conducted at the absolute discretion of the Stabilizing Manager and may be discontinued at any time, and must be brought to an end after a limited period. The details of the intended stabilization and how it will be regulated under the Securities and Futures Ordinance are contained in the Prospectus. Pursuant to the Over-allotment Option, the Joint Global Coordinators on behalf of the International Underwriters have the right, exercisable at any time from the date of the International Underwriting Agreement until 30 days after the last date for the lodging of applications under the Hong Kong Public Offering, to require our Company to issue and allot up to 199,200,000 additional Offer Shares, representing approximately 15% of the Offer Shares initially to be offered under the Global Offering, at the same price per Offer Share under the International Offering to cover, among other things, over-allocation in the International Offering, if any. If the Over-allotment Option is exercised in full, the additional Offer Shares will represent approximately 4.30% of the Company’s enlarged share capital immediately following the completion of the Global Offering and the full exercise of the Over-allotment Option. In the event that such Over-allotment Option is exercised, a press announcement will be made.

Unless otherwise defined in this announcement, terms defined in the Prospectus have the same meanings when used in this announcement.

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中石化煉化工程(集團)股份有限公司 SINOPEC Engineering (Group) Co., Ltd.[*]

(a joint stock limited liability company incorporated in the People’s Republic of China)

GLOBAL OFFERING

Number of Offer Shares under the 1,328,000,000 H Shares (subject to Global Offering : adjustment and the Over-allotment Option) Number of Hong Kong Public Offer Shares : 66,400,000 H Shares (subject to adjustment) Number of International Offer Shares : 1,261,600,000 H Shares (subject to adjustment and the Over-allotment Option) Maximum Offer Price : HK$13.10 per H Share payable in full on application subject to refund on final pricing, plus brokerage of 1%, SFC transaction levy of 0.003% and Hong Kong Stock Exchange trading fee of 0.005% Nominal Value : RMB1.00 per H Share Stock Code : 2386

Joint Sponsors

Joint Global Coordinators

Joint Bookrunners and Joint Lead Managers

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* For identification purposes only.

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The Company has applied to the Listing Committee of the Hong Kong Stock Exchange for the listing of, and permission to deal in, the H Shares, including (i) the Offer Shares; (ii) any H Shares which may be issued or sold pursuant to the exercise of the Over-allotment Option; and (iii) the H Shares converted from state-owned shares which are to be held by the National Council for Social Security Fund of the PRC. Dealings in the H Shares on the Hong Kong Stock Exchange are expected to commence on Thursday, May 23, 2013. In the event the Over-allotment Option is exercised, an announcement will be made by the Company which will be posted on the website of the Hong Kong Stock Exchange ( www.hkexnews.hk ) and on the website of the Company ( www.segroup.cn ). The H Shares will be traded in board lots of 500 H Shares each. The Company is initially offering 1,261,600,000 Offer Shares (subject to adjustment and before exercise of the Over-allotment Option) under the International Offering and 66,400,000 Offer Shares for subscription by the public in Hong Kong at the Offer Price, representing approximately 95% and 5%, respectively, of the total number of Offer Shares initially available under the Global Offering. In connection with the Global Offering and pursuant to the Over-allotment Option, the Joint Global Coordinators on behalf of the International Underwriters, have an option to require the Company to issue and allot up to an aggregate of 199,200,000 additional Offer Shares, representing approximately 15% of the Offer Shares initially to be offered in the Global Offering at the same price per Offer Share under the International Offering.

The allocation of the H Shares between the Hong Kong Public Offering and the International Offering is subject to adjustment as stated in the paragraph headed “The Hong Kong Public Offering — Reallocation” under the section in the Prospectus entitled “Structure of the Global Offering”.

The Offer Price will not be more than HK$13.10 per H Share and is expected to be not less than HK$9.80 per H Share unless otherwise announced, not later than on the morning of the last day for lodging applications under the Hong Kong Public Offering.

Applications for the Hong Kong Public Offer Shares will only be considered on the basis of the terms and conditions set out in the Prospectus, the WHITE or YELLOW Application Forms and the designated website ( www.eipo.com.hk ) for White Form eIPO .

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Applicants who wish to be issued the Hong Kong Public Offer Shares in their own names should (i) complete and sign the WHITE Application Form; or (ii) submit applications online through the designated website of the White Form eIPO Service Provider at www.eipo.com.hk under the White Form eIPO service. Applicants who wish to have the Hong Kong Public Offer Shares issued in the name of HKSCC Nominees and deposited directly into CCASS for credit to their CCASS Investor Participant stock account or their designated CCASS Participant’s stock account should (i) complete and sign the YELLOW Application Form; or (ii) give electronic application instructions to HKSCC via CCASS.

Copies of the Prospectus, together with the WHITE Application Forms, may be obtained during normal business hours from 9:00 a.m. on Friday, May 10, 2013 till 12:00 noon on Wednesday, May 15, 2013 (or such later date as may apply as described in the section headed “How to Apply for Hong Kong Public Offer Shares — Effect of Bad Weather on the Opening of the Application Lists” in the Prospectus) from any of the following addresses of the Hong Kong Underwriters:

J.P. Morgan Securities (Asia Pacific) Limited

28/F Chater House 8 Connaught Road Central, Hong Kong

CITIC Securities Corporate Finance (HK) Limited

26/F CITIC Tower 1 Tim Mei Avenue Central, Hong Kong

UBS AG, Hong Kong Branch

52/F Two International Finance Centre 8 Finance Street Central, Hong Kong

Goldman Sachs (Asia) L.L.C.

68th Floor, Cheung Kong Center 2 Queen’s Road Central Hong Kong

China International Capital Corporation Hong Kong Securities Limited

29th Floor, One International Finance Centre 1 Harbour View Street Central Hong Kong

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The Hongkong and Shanghai Banking Corporation Limited

1 Queen’s Road Central Hong Kong

Haitong International Securities Company Limited

22/F Li Po Chun Chambers 189 Des Voeux Road Central Hong Kong

Citigroup Global Markets Asia Limited

50th Floor, Citibank Tower 3 Garden Road Central Hong Kong

Merrill Lynch Far East Limited

15/F Citibank Tower 3 Garden Road Central, Hong Kong

Deutsche Bank AG, Hong Kong Branch

Level 52, International Commerce Centre 1 Austin Road West Kowloon Hong Kong

CMB International Capital Limited

Units 1803-4 18/F, Bank of America Tower 12 Harcourt Road Central Hong Kong

BOCOM International Securities Limited

9/F., Man Yee Building 68 Des Voeux Road Central Hong Kong

BOCI Asia Limited

26th Floor, Bank of China Tower 1 Garden Road Central Hong Kong

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or any of the following branches of:

Bank of China (Hong Kong) Limited:

	Branch Name	Address
Hong Kong Island:	Bank of China Tower	3/F, 1 Garden Road
	Branch
	Central District (Wing On	71 Des Voeux Road
	House) Branch	Central
	Sheung Wan Branch	252 Des Voeux Road
		Central
	409 Hennessy Road	409-415 Hennessy Road,
	Branch	Wan Chai
	Chai Wan Branch	Block B, Walton Estate,
		341-343 Chai Wan Road,
		Chai Wan
	North Point (King’s	193-209 King’s Road,
	Centre) Branch	North Point
	Aberdeen Branch	25 Wu Pak Street,
		Aberdeen
Kowloon:	Mong Kok Branch	589 Nathan Road,
		Mong Kok
	Humphrey’s Avenue	4-4A Humphrey’s Avenue,
	Branch	Tsim Sha Tsui
	Kwun Tong Branch	20-24 Yue Man Square,
		Kwun Tong
	Whampoa Garden Branch	Shop G8B, Site 1,
		Whampoa Garden,
		Hung Hom
	Wang Kwun Road Branch	Unit G1, Nan Fung
		Commercial Centre,
		Wang Kwun Road,
		Kowloon Bay

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		Metro City Branch	Shop 209, Level 2,
			Metro City Phase 1,
			Tseung Kwan O
		Wong Tai Sin Branch	Shop G13,
			Wong Tai Sin Plaza,
			Wong Tai Sin
		Kowloon Plaza Branch	Unit 1, Kowloon Plaza,
			485 Castle Peak Road
New	Territories:	Kau Yuk Road Branch	18-24 Kau Yuk Road,
			Yuen Long
		Lucky Plaza Branch	Lucky Plaza,
			Wang Pok Street,
			Sha Tin
		Tuen Mun Town Plaza	Shop 2, Tuen Mun Town
		Branch	Plaza Phase II
		Sheung Shui Branch	136 San Fung Avenue,
		Securities Services Centre	Sheung Shui
		Citywalk Branch	Shop 65, G/F, Citywalk,
			1 Yeung Uk Road,
			Tsuen Wan

Copies of the Prospectus, together with the YELLOW Application Forms, may be obtained during normal business hours from 9:00 a.m. on Friday, May 10, 2013 till 12:00 noon on Wednesday, May 15, 2013 from the Depository Counter of HKSCC at 2nd Floor, Infinitus Plaza, 199 Des Voeux Road Central, Hong Kong or your stockbroker, who may have YELLOW Application Forms and copies of the Prospectus available.

Your WHITE or YELLOW Application Forms can be lodged at the following times on the following dates:

Friday, May 10, 2013 — 9:00 a.m. to 5:00 p.m. Saturday, May 11, 2013 — 9:00 a.m. to 1:00 p.m. Monday, May 13, 2013 — 9:00 a.m. to 5:00 p.m. Tuesday, May 14, 2013 — 9:00 a.m. to 5:00 p.m. Wednesday, May 15, 2013 — 9:00 a.m. to 12:00 noon

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Applicants may apply online through the White Form eIPO Service Provider by submitting an application through the designated website at www.eipo.com.hk from 9:00 a.m. on Friday, May 10, 2013 till 11:30 a.m. on Wednesday, May 15, 2013 or such later date as described in the section headed “How to Apply for Hong Kong Public Offer Shares — Effect of Bad Weather on the Opening of the Application Lists” in the Prospectus (24 hours daily, except on the last application day).

CCASS Participants can input electronic application instructions from 9:00 a.m. on Friday, May 10, 2013 till 12:00 noon on Wednesday, May 15, 2013 (or such later date as may apply as described in the section headed “How to Apply for Hong Kong Public Offer Shares — Effect of Bad Weather on the Opening of the Application Lists” in the Prospectus).

Please refer to the sections headed “Structure of the Global Offering” and “How to Apply for Hong Kong Public Offer Shares” of the Prospectus for details of the conditions and procedures of the Hong Kong Public Offering.

It is expected that the Offer Price will be published on Wednesday, May 22, 2013.

The Company expects to announce the results of applications in the Hong Kong Public Offering, including indication of levels of interest in the International Offering, levels in the applications of the Hong Kong Public Offering and the basis of allocation of the Hong Kong Public Offer Shares on Wednesday, May 22, 2013 in the South China Morning Post (in English) and the Hong Kong Economic Times (in Chinese), the website of the Hong Kong Stock Exchange ( www.hkexnews.hk ) and the website of the Company ( www.segroup.cn ).

The Hong Kong Identity Card/passport/Hong Kong Business Registration numbers of successful applicants under the Hong Kong Public Offering will be available at the times and date and in the manner specified in the section headed “How to Apply for Hong Kong Public Offer Shares — Publication of Results” in the Prospectus.

No temporary documents of title will be issued in respect of the H Shares and no receipt will be issued for sums paid on application. H Share certificates will only become valid certificates of title at 8:00 a.m. on Thursday, May 23, 2013 provided that the Hong Kong Public Offering has become unconditional in all respects and the right of termination described in the section entitled “Underwriting — Underwriting Arrangements and Expenses — Hong Kong Public Offering — Grounds for

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Termination” has not been exercised. Dealings in the H Shares are expected to commence at 9:00 a.m. on Thursday, May 23, 2013. The H Shares will be traded in board lots of 500 H Shares each. The stock code of the H Shares is 2386.

On behalf of the Board SINOPEC Engineering (Group) Co., Ltd. CAI Xiyou Chairman

Hong Kong, May 10, 2013

As at the date of this announcement, the Non-Executive Directors are CAI Xiyou, ZHANG Kehua, LEI Dianwu, LING Yiqun and CHANG Zhenyong; the Executive Director is YAN Shaochun; and the Independent Non-Executive Directors are HUI Chiu Chung, Stephen, JIN Yong and YE Zheng.

Please also refer to the published version of this announcement in the South China Morning Post (in English) and the Hong Kong Economic Times (in Chinese).

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