Formerly known as Quality Transformer Co., Ltd., QTC Energy Public Co., Ltd., was registered on 19 July 1996 with a starting registered capital of 10 million baht to conduct the businesses of manufacturing and distributing electricity distribution transformers. On 4 July 2003, the company changed its name to QTC Transformers Co., Ltd., and on 19 August 2010, the company became a public company limited under the name of QTC Energy Public Co., Ltd., and listed on Stock Exchange Thailand ob 28 july 2011 with Mr. Poonphiphat Tantanasin as the founder. Mr. Poonphiphat Tantanasin has over frothy years of experience working in the transformer manufacturing industry. He has worked with major and leading companies manufacturing transformers domestically and held responsibilities in various aspects, including design, assembly and production as well as sales and marketing, so he has knowledge and expertise covering all aspects in the field of transformers. Furthermore, the company’s administrative team, engineers and most company employees have had knowledge, experience and expertise in the electricity transformer business for more than 26 years. Moreover, they have received training from leading transformer manufacturing countries in foreign countries, such as Germany and Japan. The aforementioned experience has helped the company develop high quality transformers which have become widely accepted among the government enterprise customer group involved with electricity, namely, the Metropolitan Electricity Authority, the Provincial Electricity Authority, and in private sector customer groups both domestically and abroad.

Throughout the past, the company has continually developed transformer products and received accreditation according to various standards, such as Thai Industrial Standards TIS 384-2543 from the Thai Industrial Standards Institute, Ministry of Industry, ISO 9001:2000 standards for designs, production, and maintenance of distribution transformers. Furthermore, the company is able to produce quality transformers meeting various international standards, which is proof of the international quality of the transformers manufactured by QTC.

The details of significant company developments in the past are as follows:

Year 2016

• In January, the Company laid key foundations (Phase 3) in the work to improve processes by applying the Total Quality Management system (TQM) to develop the company for sustainability.
• In January, the Company established a joint company, namely, PPWE Co., Ltd. and holds 50 percent of registered shares at the amount of one million baht to operate an energy business in a joint venture with UAC Global PCL.
• In June, the Company increased its registered capital from 70 million baht from the previous value of 200 million baht to become 270 million baht by the issuance of 70 million new ordinary shares at one baht marked price per share for sales to persons in a limited circle.
• In September, the Company was awarded a certificate for being a pioneer company registered by Thailand Greenhouse Gas Management Organization (Public Organization).
• In September, the Company established a subsidiary, namely, QTC Global Power Co., Ltd. to operate an energy business with a registered capital of 10 million baht.
• In September, the Company was given the Outstanding Corporate Governance Award (Eastern Region) from the Committee for Promoting Codes of Conduct and Anti-Corruption, Thai Chamber of Commerce, together with the Bureau of Corruption Prevention in State Enterprises and Private Sector.
• In October, the Company received the Innovative Organization Award of 2016 from Dr. CHaiyawat Wibulsawasdi, Chairman of the Stock Exchange of Thailand.
• In October, the company was rated excellence in the CG Scorecard by the IOD, thereby providing affirmation to good corporate governance and transparency.
• In December, the Company was awarded the Green Industry Level 4 by the Ministry of Industry.
• In December, the Company received the Sustainability Report Award for the year 2016 as organized by the CSR Club, Thai Listed Companies Association.

Year 2015

• In January, the Company began to lay out key foundations (Phase 2) for process modification by implementing total quality management toward sustainable corporate development.
• In March, the Company was granted ESG100 Certification by Dr. Pipat Yodprudtikan, Director of Thaipat Institute, for outstanding business sustainability.
• In April, the Company signed an exclusive distribution agreement with Industrias Mecano Electricas Fontecha Yebenes, S.L. (IMEFY) to become the exclusive sales representative in Thailand for Cast Resin transformers from Spain. We will distribute under the QTC brand and manufacture under IMEFY.
• In July, the Company applied for participation in an organization health project with Share Foundation to develop processes and improve corporate happiness for work life balance.
• In September, the Company received a certificate for passing an evaluation by the Department of Disease Control, Ministry of Public Health, at good levels as a happy workplace free from disease and danger at the provincial level.
• In October, the Company was granted the SET Sustainability Award 2015 as the only MAI-listed company to receive this award and the Thai Sustainability Investment Award (Sustainable Shares) from the Stock Exchange of Thailand.
• In October, the Company was evaluated for CG Scorecard by IOD and found to be excellent as a confirmation of good and transparent governance.
• In November, the Company was certified by the 5S Model Award 2015 for production areas at Factory 4, warehouse areas and electrical transformer repair areas.
• In November, the Company received the Best Investor Relations Award and the Company was the only MAI-listed company to receive the Best Investor Relations Award from the Stock Exchange of Thailand
• In November, transformers with power capacity of 75 kVA and 300 kVA passed the Short Circuit Test by CESI, Italy.
• In December, the Company received the Best Corporate Governance Award of 2015 for the Central Region from Prof. Dr. Kasem Wattanachai in praise of entrepreneurs who operate businesses with principles of corporate governance by adhering to transparency and honesty.

Year 2014

• In January, the company laid out its main foundation (Phase 1) for modifying processes by implementing the Total Quality Management System (TQM) to sustainably develop the organization.
• In February, the company applied for participation in TLC: ISO50001 Project with the Thai Industrial Standards Institute and the company is currently requesting certification from SGS Co., Ltd.
• In March, company has received the honor a card to show that they have been taken to prevent and solve the problem of drugs in operations by the white factory project. Level 3 from the Department of labour protection and welfare, and Rayong province.
• In May, the company completed construction of transformer tank factory buildings.
• In July company sent the first set of transformers to sell in Japan successfully.
• In November, the company received the 5S Model Award 2014 for the Bangkok Office area, the CSR Office area, Factory No. 3 areas and the Coiling Room area.
• In November, the company received three awards for registered companies for corporate social responsibility from the Stock Exchange of Thailand at the SET Award as follows:
  1. CSR Recognition 2014 in the general category.
  2. CSR Award 2014 in the outstanding category.
  3. CSR Award 2014 in the excellence category

Year 2013

• In July, the company was granted accreditation for laboratory testing in compliance with TIS 17025-2548 (ISO/IEC 17025:2005) Standards, Certificate No. 12007/T 309 from the Thai Industrial Standards Institute for the second consecutive year in which the company applied for accreditation.
• In May, the company producted Amorphous Distribution Transformers (AMDT) in cooperation with Hitachi Metals Japan with 1000 kVA sized transformers for commercial distribution with the first transformer in October.
• In June, the company participated in an in-depth consulting project for SMEs with the lean standards of the Department of Industrial Promotion.
• In June, the company participated in a consultation project for 5-S activities by the Technology Promotion Association (Thailand -Japan) for corporate restoration and development in increase production capacity with the 5-S system.
• In June, the company was awarded a Class 3 Green Industry certificate by the Ministry of Industry.
• In June, the company signed a joint venture project contract for the construction of electricity transformers in Vientiane, Laos.
• In July, the company purchased a Distribution Transformer Test System DTTS 3-2500 from HAEFELY Switzerland in order to enhance the efficiency of testing and certification for increasing work volume in the future. The installation and use began in February of 2014.
• In July, the company commenced the construction of a plant for manufacturing tanks for electricity transformers.
• In November, the company was granted CSRI Recognition in the Rising Star category by the Corporate Social Responsibility Institute, Stock Exchange of Thailand.

Year 2012

• In February, the company was officially awarded laboratory accreditation for laboratory testing ability in compliance with TIS Standard No. 17025-2548 (ISO/IEC 17025:2005), Certificate No. 12007/T 309 from the Thai Industrial Standards Institute, Ministry of Industry.
• In February, the company moved to work at its new headquarters located at 2/2 Krungthep Kritha 8 (5), Krungthep Kritha Rd. Huamark, Bangkapi, Bangkok 10240.
• In March, the company commenced the construction of a plant in order to expand production capacity by adding silicon steel slitting machines and silicon steel cutting machines. The construction was complete and the plant was open for operations in December in Pluak Daeng, Rayong.
• In April-September, the company participated in an industrial logistics efficiency building project by the Department of Primary Industries and Mines in cooperation with the Technology Promotion Association (Thailand-Japan).
• In June, the company was awarded a certificate for being a health-promoting workplace by Honorary Professor, Dr. Kasem Wattanachai, Privy Councilor.
• In July, the company participated in a cooperative project for the production of Amorphous Distribution Transformers (AMDT) with Hitachi Metals Japan.
• In October, 100 KVA 3 Ph 50 Hz 22000-400/230 V, 100,500 KVA 3 Ph 50 Hz 33000-400/230 V. and 150,300,750 KVA 3 Ph 50 Hz 24000-416/240 V electricity transformers passed short circuit testing by the CESI in Italy with Type Test Certificate No.B2030322-27.
• In September, the company was awarded a certificate for meeting clean technology criteria for entrepreneurial development from the Governor of Rayong.

Year 2011

• In March, the company registered changes in share value from the original value of 100 baht per share to 1 baht per share, including an increase in registered capital by 50 million baht from the original amount of 150 million baht, which put the registered capital at 200 million baht. Shares were divided as follows:
  • Forty-five million new common shares which were offered for public sales and
  • Five million new common shares which were offered for sale to company directors and employees.
• In April, the company constructed new offices at 2/2 Soi Krungthep Kritha 8 (5), Krungthep Kritha Rd., Huamark, Bangkapi, Bangkok 10240
• In July, company proposed the ordinary shares to the public (Initial Public Offering) and traded of shares on 28 July,2011 by trading name "QTC"
• In August, the company was a top recipient of a Zero Accident Award (no occupational accidents causing ongoing work to stop over the past year for no less than 1,000,000 working hours) from the Zero Accident Campaign of 2011 from the Department of Welfare and Labor Protection, Ministry of Labor.
• In October, the company received the Top Corporate Governance Award (Eastern Region) from the Thai Chamber of Commerce Good Corporate Governance Commission in cooperation with the Office of the NCCC and the Thai Chamber of Commerce University.
• In November, the company was considered by the Thai Laboratory Accreditation Scheme, Electronics-Telecommunications, which decided to approve accreditation of the company’s laboratory according to TIS 17025-2548 standards with the Thai Industrial Standards Institute
• In December, the company was awarded for food hygiene with a "D" Class certificate for "Clean Food, Good Taste" from the Health Department, Ministry of Public Health for the second consecutive year.

Year 2010

• The company received the 2nd Annual SME National Award of 2009 in machinery and equipment category from the Office of Small and Medium Enterprise Promotion (OSMEP), Ministry of Industry.
• The company received the Prime Minister's Industry Award 2010 for SME Industrial Management from the Ministry of Industry.
• In September of 2010, the company received extension of rights to use the Q-MARK from the Joint-Standing Committee on Commerce, Industries and Banking (JSCCIB) in the production sector and the trade and services sector as follows:
  1. Single phase oil type distribution transformers sized at 1-167 kVA with maximum voltage of 36 kv and three-phase oil type distribution transformers sized at 1-2500 kVA with maximum voltage of 36 kV and quality to meet the standards of trading partner countries as well as the quality standards of Thailand, which were issued on 10 September 2010 and effective until 9 September 2012.
  2. Distribution, sales, installation, and maintenance of transformers, which were issued on 10 September 2010 and effective until 9 September 2012.
• The company received the "D" Class Certificate for Clean Food Good Taste standards from the Department of Health, Ministry of Public Health.
• In August of 2010, the company became a public company limited and changed its name to QTC Energy Public Co., Ltd.

Year 2009

• The company was granted ISO 9001:2008 accreditation for quality management systems from UKAS, England, and NAC, Thailand. SGS Company (Thailand) provided accreditation.
• The company was awarded the "D" Class Certificate of Clean Food Good Taste standards from the Department of Health, Ministry of Public Health.

Year 2008

• The company received OHSAS 18001:2007 accreditation for occupational health and safety management systems from UKAS, England. SGS Company (Thailand) provided accreditation.
• The company's 500 kVA and 2000 kVA transformers passed short circuit testing from CESI, Italy.
• The company was granted the right to use the Q-MARK from the Joint-Standing Committee on Commerce, Industries and Banking (JSCCIB) consisting of the Thai Chamber of Commerce, the Federation of Thai Industries, and the Thai Bankers' Association as a mark for certification of product quality, business ethics, responsibility to customers, consumers and society including the manufacturing, trade and service sectors as follows:
  1. Single phase oil type distribution transformers with sized 1-167 kVA with maximum voltage of 36 kv and three-phase oil type distribution transformers sized at 1-2500 kVA with maximum voltage of 36 kV with quality meeting the standards of trade partner countries and the standard quality of Thailand, which was issued on 27 May 2008 and effective until 26 May 2010.
  2. [Standards for] the distribution, services, repairs, and installations of transformers, including corporations, issued 21 March 2008 and effective until 20 March 2010.
• The company was granted ISO 14001:2004 accreditation for environmental management systems from UKAS, England, and NAC, Thailand. SGS Company (Thailand) provided certification.
• The company received the Thai Chamber of Commerce Business Ethics Standard Test Award of 2008 from the Thai Chamber of Commerce as an organization with ethical management according to the ethics of the Thai Chamber of Commerce comprising the following six key issues:
  1. Fair treatment of all parties concerned.
  2. Disclosure of information and transparency.
  3. Risk management.
  4. Promotion of excellent corporate practice.
  5. Corporate social and national responsibility.
  6. Yielding sustainable tangible returns for the nation.
• The company increased registered capital by 50 million baht from the original registered capital of 100 million baht by issuing 500,000 new common shares valued 100 baht per share for proposed sales to existing shareholders at the proposed sales price of 100 baht per share.
• shareholders at the proposed sales price of 100 baht per share.
  The company was awarded the International Europe Award for Quality from exporting transformers for distribution in Spain.

Year 2007

• The company's 167 kVA transformers passed short circuit testing from KEMA, the Netherlands.
• The company received ISO 14001:1996 standards accreditation from RWTÜV, Germany (2001).

Year 2005

• The company increased its registered capital by 50 million baht from the original registered capital of 50 million baht by issuing 500,000 new common shares valued at 100 baht per share in order to propose sales to existing shareholders, which put the company's registered capital at 100 million baht.

Year 2004

• The company increased registered capital by 40 million baht from the original registered capital of 10 million baht by issuing 400,000 new common shares valued at 100 baht per share in order to propose sales to existing shareholders, which put the company's registered capital at 50 million baht.
• The company was accredited by Thai Industrial Standards TIS 384-2543 for power transformers from the Thai Industrial Standards Institute, Ministry of Industry.
• The company's 250 kVA and 1000 kVA transformers passed short circuit testing from CESI, Italy.