Kingboard Laminates : JOINT ANNOUNCEMENT- POSITIVE PROFIT ALERT

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited 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.

KINGBOARD CHEMICAL KINGBOARD LAMINATES HOLDINGS LIMITED HOLDINGS LIMITED 建滔化工集團有限公司 建滔積層板控股有限公司

(Incorporated in the Cayman Islands (Incorporated in the Cayman Islands with limited liability) with limited liability)

(Stock Code: 148) (Stock Code: 1888) JOINT ANNOUNCEMENT POSITIVE PROFIT ALERT

This announcement is jointly published by Kingboard Chemical Holdings Limited ("KBC",

together with its subsidiaries, the "KBC Group") and Kingboard Laminates Holdings Limited ("KBL", together with its subsidiaries, the "KBL Group") pursuant to Rule 13.09(2) of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited (the "Listing Rules") and Inside Information Provisions under Part XIVA of the Securities and Future Ordinance (Chapter 571 of the Laws of Hong Kong) (the "SFO").

The board of directors of KBC (the "KBC Board") wishes to inform shareholders and potential investors of KBC that, based on the preliminary review of the unaudited management accounts of the KBC Group (including the KBL Group) for the six months ended 30 June 2017 and the information currently available to the KBC Board, the KBC Group is expecting to record an increase in the net profit of over 30% for the six months ended 30 June 2017 as compared with the corresponding period in 2016. The expected increase in the net profit of the KBC Group is mainly attributable to the growth in the profit margin of various divisions, namely printed circuit boards division, chemical division and, in particular, laminates division.

The board of directors of KBL (the "KBL Board") wishes to inform shareholders and potential investors of KBL that, based on the preliminary review of the unaudited management accounts of the KBL Group for the six months ended 30 June 2017 and the information currently available to the KBL Board, the KBL Group is expecting to record an increase in the net profit of over 100% for the six months ended 30 June 2017 as compared with the corresponding period in 2016. The expected increase in the net profit of the KBL Group is mainly attributable to the increase in profit margin of the products manufactured and sold by the KBL Group. As a result of undersupply, market prices of glass fabric and other upstream materials rose significantly during the period, leading to several price increases of laminates.

The KBC Board and KBL Board believe that the increase in profit margin is also contributed by the KBC Group's strong and comprehensive vertical integration business model.

This positive profit alert announcement is only based on the preliminary assessment by the KBC Board and KBL Board, respectively, with reference to their respective management accounts and the information currently available, which are subject to finalization and adjustments where necessary, and have not been reviewed or audited by the auditors or audit committees of KBC and KBL, respectively. KBC and KBL are still in the process of finalizing their respective interim results for the six months ended 30 June 2017. Financial information and other details of KBC and KBL for the six months ended 30 June 2017 will be disclosed in their respective interim results announcements in accordance with the requirements of the Listing Rules.

The respective shareholders and potential investors of KBC and KBL are advised to read carefully the respective interim results announcements of KBC and KBL for the six months ended 30 June 2017, which will be published before the end of August 2017 pursuant to the requirements of the Listing Rules.

By Order of the board of directors By Order of the board of directors

Kingboard Chemical Holdings Limited Kingboard Laminates Holdings Limited Lo Ka Leong Leung Yu Hin

Company Secretary Company Secretary

Hong Kong, 17 July 2017

As at the date of this announcement, the board of directors of Kingboard Chemical Holdings Limited consists of Messrs. Cheung Kwok Wing, Chang Wing Yiu, Cheung Kwong Kwan, Ho Yin Sang, Cheung Wai Lin, Stephanie, Cheung Ka Shing and Chen Maosheng, being the executive directors and Messrs. Cheung Ming Man, Chong Kin Ki, Leung Tai Chiu and Chan Wing Kee, being the independent non-executive directors.

As at the date of this announcement, the board of directors of Kingboard Laminates Holdings Limited consists of Messrs. Cheung Kwok Wa, Cheung Kwok Keung, Cheung Kwok Ping, Lam Ka Po, Cheung Ka Ho, Liu Min and Zhou Pei Feng, being the executive directors, Mr. Lo Ka Leong, being the non-executive director, and Messrs. Leung Tai Chiu, Ip Shu Kwan, Stephen, Zhang Lu Fu and Lau Ping Cheung, Kaizer, being the independent non-executive directors.