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Investor Relations
Corporate Profile
Company's Name   Diamond Building Products Public Company Limited
Abbreviation   DRT
Registration Number   0107547001041
Type of Business   Production and distribution of roofing products, boards and ceilings, siding boards, and other roof accessories and non-roof products as well as being a service provider for roof stripping and installation under the trademark names of Diamond, Roof, Adamas and Jearanai.
Registered Capital   947,961,800 ordinary shares at a par value of Baht 1 per share totaling Baht 947,961,800 and 947,961,800 issued and paid-up ordinary shares totaling Bath 947,961,800.


1985 August 28, 1985: The Company was established under the name of Siam City Tiles and Pipes Company Limited with Siam City Cement Public Company Limited as a major shareholder.
2001 April 3, 2001: The Company formally changed its name to Diamond Roofing Tiles Company Limited (DRT).
2002 December 26, 2002: There was a change in the shareholding structure with Myriad Materials Company Limited becoming a major shareholder.
2004 December 2, 2004: The Company was incorporated as a public company and became Diamond Roofing Tiles Public Company Limited.
2005 November 9, 2005: The Company was given permission by the Securities and Exchange Commission (SEC) to register its ordinary shares for trading on the Stock Exchange of Thailand (SET) and its shares were first traded on November 29, 2005 under the stock trading acronym of "DRT".
2011 January 18, 2011: The Company formally changed its name to Diamond Building Products Public Company Limited (DBP).
2013 May 9, 2013: Formation and registration of a subsidiary company, Diamond Materials Co., Ltd. with initial, "DMATS"

Head Office 69-70 Moo 1, Mitraphap Road, Km. 115, Tambon Talingchan, Amphur Muang, Saraburi 18000
Tel: 0-3622-4171-8, Fax: 0-3622-4187
Branch Office 1 408/163-165, Paholyothin Place Bldg., 40th Floor, Paholyothin Road, Samsennai, Phayathai, Bangkok 10400
Tel: 0-2619-0742, Fax: 0-2619-0488
Branch Office 2 269 Moo 3, Tambon Samran, Amphur Muang, Khon Kaen 40000
Tel: 0-4339-3390-1
Branch Office 3 169-170 Moo 4, Mitrapap Road, Tambon Tan Diao, Amphur Kaengkhoi, Saraburi 18110
Tel: 0-3622-4171-8 Ext. 401-420
Call Center: 0-2619-2333
E-mail Address:

Registrar Auditor
Thailand Securities Depository Co., Ltd.
93 Ratchadaphisek Road, Dindaeng, Dindaeng, Bangkok 10400, Thailand
Tel: 0-2009-9000, Fax: 0-2009-9991
TSD Call center: 0-2009-9999
KPMG Phoomchai Audit Ltd.
Empire Tower 1, 50th - 51st Floors,
South Sathorn Road, Bangkok 10120
Tel: 0-2677-2000, Fax: 0-2677-2222
E-mail (general issues): E-mail (service request):