2007 Interim Report

Interim Results Announcement

DATE OF BOARD MEETING

DISCLOSEABLE TRANSACTION (ESTABLISHMENT OF SHOUGUANG BAOLONG PETROLEUM EQUIPMENT COMPANY LIMITED)

Proposed bonus share issue

Announcement

Results of General Meetings

Annual Report

Clarification Announcement

Results Announcement (Final, 2006)

Announcement

Announcement

Announcement

Announcement (Notice of voluntary withdrawal of listing on GEM of the HKEx, proposed listing of H shares on the Main Board of the HKEx)

Results Announcement (Q3, 2006)

Notice of Board Meeting

Notice of Extraordinary General Meeting

Notice of class meeting of the holders of H shares

Notice of class meeting of the holders of domestic shares

Announcement (Listing by way of introduction of the entire issued H share capital of the company on the Main Board of the Stock Exchange of Hong Kong Limited)