Siamtone.com

ABOUT US SIAM TONE CO., LTD.

Name of the company siam tone co., ltd. Establishment 18 January 1989.

Siam Tone Co., Ltd. was established in January 1989 as a subsidiary company of Tone Corporation which was established in May 1917. Tone Engineering corporation which was construction department of Tone Corporation and separated from Tone Corporation is became the major share holder of the company. A successor of Tone Corporation construction,inherits the technique,the resources,equipment,and material from Tone Corporation and such backbone strengthen Siam Tone's competency as a professional construction firm. At present, we meet the expectation of the customer with underground development and consulting business not only in Thailand but also in the world.In addition,we have established our own construction method.We are ready to provide service for customer's demand with newest machinery and with the development of new construction method.

OUR HISTORY

Name of the company siam tone co., ltd. Establishment 18 January 1989.

1989-1992

JANUARY,1989 Siam Tone Co., Ltd. was established as a joint venture between Tone Corporation, Mitsiam International Ltd. Siam Industrial Crop Ltd.and Mitsui& Co., Ltd. as a foundation contractor for buildings,etc APRIL,1990 Technical transter agreement was signed with Tone Corp. on the total method of construction. NOVEMBER,1990 Bangpakong factory was constructed and production of boring machines was started as the first manufacture in Thailand. AUGUST,1992 Geotechnical Investigation of land subsidence in Bangkok and vicinity area.

1994-1998

JULY,1994 Water well drilling and development in Vientiane province,Laos NOVEMBER,1994 Hydrogeological study and test hole drilling and development in Champasak province,Laos. FEBRUARY,1997 Test Well drilling and development for a pilot water supply system,a part of the ground water study in southern Cambodia. NOVEMBER, 1998 Mekong Bridge at Kampong Cham was started and completed in April 1999. JULY,1998 Water supply project in Mozambique. Water supply project in Bolivia,and Zimbabwe.

1999-2002

MAY,1999 Arsenic Investigation in southern Thailand AUGUST,2000 Arsenic Investigation in 3 states at Western Bangladesh,Water supply project in Mali,Guinea,Papua New Guinea,Bolivia and East Timor. SEPTEMBER, 2001 Rupsa Bridge foundation work was started in Bangladesh. JUNE,2002 Water supply project in Angola, Sri Lanka,Pre-Urban in Cambodia, Guinea and Madagascar. DECEMBER,2002 Japanese share holder Tone Corporation Transferred their share of Siam Tone Co., Ltd. to Urban Tone Corporation.

2003-2007 55

JANUARY,2003 Foundation work for industrial ring road project was completed. MARCH 2004 The Second Mekong (Thai-Lao)Bridge Foundation (Reverse Method)work was completed. JANUARY,2007 Can Tho Bridge (Vietnam)Foundation work was completed. AUGUST,2007 Foundation work for 500 KV. Transmission Line,Mekong River Crossing, was completed. OCTOBER,2007 Rio Tuda (Phillpone)Jetty Foundation (PCJ Method)work was completed. OCTOBER,2007 Juba,Sudan River Port,Road,& Water Supply Project work was completed.

2008-2014 55

2008-2012, Bored pile construction for Express Road Project in Algeria. 2008-2013,Water supply project in Kenya, Ethiopia, Mali,Cameroon,Tanzania Djibouti,Malaysia and Solomom. 2008-2014, Geotechnical investigation at Cambodia,Papua New Guinea,Southern Sudan,Tuvalu,Vanuatu,Mozambique and Kenya. 2009-2013, Sea water well drilling at Maldives. 2011-2013, Rural water supply system in Rwanda. 2011-2012, Geotechnical site investigation for Xepain-Xe Namnoy Hydroelectric Power Project in Laos. 2011-Core boring of Lignite for Mai Khot Coal Mine Project,Myanmar. 2013-2014, Horizontal well drilling at Malaysia.

2015-2018 55

2015-Lignite coring for Hongsa Power Project in Laos 2014-2016, Water supply system for Baringo Project,Kenya. 2014-2017, Bridge construction between Ile and Cuamba, Mozambique. 2017- Nom, Bridge construction at Togo. 2017-2018, Drilling for Instrumentation work for Nam kong 2 and Nam Ngiep Hydropower Project in Laos.

OUR REWARDS

Name of the company siam tone co., ltd. Establishment 18 January 1989.

Samutprakan Province areas the Standard on prevention and Solution to Drug Problems in an Establishment 2014.

Samutprakan Province areas the Standard on prevention and Solution to Drug Problems in an Establishment 2014 to certify that SIAM TONE CO., LTD. 5/15 Moo 6 Bangna-Trad Road,Km.15 Bangchalong Bangplee, Samutprakarn, enables to undertake the administration and management to fulfill standard's criteria on prevention and solution to drug problems in establishment Issue Date:27 August 2014 Certificate validation date: 26 August 2017.

Samutprakan Province areas the Standard on prevention and Solution to Drug Problems in an Establishment 2017.

Samutprakan Province areas the Standard on prevention and Solution to Drug Problems in an Establishment 2017 to certify that SIAM TONE CO., LTD. 5/15 Moo 6 Bangna-Trad Road,Km.15 Bangchalong Bangplee, Samutprakarn. enables to undertake the administration and management to fulfill standard's criteria on prevention and solution to drug problems in establishment Issue Date:29 August 2017 Certificate validation date: 28 August 2020.

OUR TEAM

Name of the company Siam tone co., ltd. Establishment 18 January 1989.

Mr.Mitsunori Izawa