On 2 July 2013, the Malaysian Ministry of International Trade and Industry initiated an anti-dumping investigation on cellulose fibre reinforced flat cement and pattern sheets originating in or imported from Thailand. The products subject to investigation are classified under the following HS codes: 6811.8210 and 6811.8290. The request was lodged by Hume Cemboard Industries Sdn. Bhd.
 
On 30 November 2013, the Malaysian authorities imposed a provisional anti-dumping duty on imports of the subject good from Thailand. The rate of duty ranges from 13.96% to 63.10%, depending on the exporting company. The duty is in force for a period of 120 days.
 
On March 30, 2014, the Malaysian authorities imposed a definitive anti-dumping duty on imports of flat cement from Thailand. The rate of duty ranges from 0% to 31.14%, depending on the exporting company. The measure is in force for a period of five years.

On 29 March 2019, the Malaysian authorities initiated a sunset review of the definitive antidumping duty imposed on imports of the subject good from Thailand. This follows the request lodged on 28 September 2018 by Hume Cemboard Industries Sdn Bhd. On the same day, the Malaysian authorities issued Customs (Anti-dumping Duty) (Extension) Order 2019 P.U. (A) 95/2019 extending the definitive duty until 26 September 2019.

On 24 September 2019, the Malaysian authorities extended the definitive duty imposed on imports of cellulose fibre reinforced flat cement and pattern sheets from Thailand following the conclusion of a sunset review. The rate of duty is between 9.15% and 31.14% depending on the company. The duty is in force for a period of five years. The order extending the definitive duty was issued on 23 September 2019.