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Organisation and principal activities | 12 Months Ended
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Dec. 31, 2018
Organisation and principal activities | Euro Tech Holdings Company Limited (the “Company”) was incorporated in the British Virgin Islands on September 30, 1996. Euro Tech (Far East) Limited (“Far East”) is the principal operating subsidiary of the Company. It is principally engaged in the marketing and trading of water and waste water related process control, analytical and testing instruments, disinfection equipment, supplies and related automation systems in Hong Kong and in the People’s Republic of China (the “PRC”). Details of the Company’s significant subsidiaries and affiliates are summarised as follows:
Name | Percentage of equity ownership | Place of incorporation | Principal activities
| 2018 | 2017 |  |
Subsidiaries: |  |  |  |
Euro Tech (Far East) Limited | 100% | 100% | Hong Kong | Marketing and trading of water and waste water related process control, analytical and testing instruments, disinfection equipment, supplies and related automation systems
Euro Tech (China) Limited | 100% | 100% | Hong Kong | Inactive
Euro Tech Trading (Shanghai) Limited | 100% | 100% | The PRC | Marketing and trading of water and waste water related process control, analytical and testing instruments, disinfection equipment, supplies and related automation systems
Shanghai Euro Tech Limited | 100% | 100% | The PRC | Manufacturing of analytical and testing equipment
Shanghai Euro Tech Environmental Engineering Company Limited | 100% | 100% | The PRC | Undertaking water and waste-water treatment engineering projects
Chongqing Euro Tech Rizhi Technology Co., Ltd | 100% | 100% | The PRC | Marketing and trading of water and waste water related process control, analytical and testing instruments, disinfection equipment, supplies and related automation systems
Rizhi Euro Tech Instrument (Shaanxi) Co., Ltd | 100% | 100% | The PRC | Marketing and trading of water and waste water related process control, analytical and testing instruments, disinfection equipment, supplies and related automation systems
Name | Percentage of equity ownership | Place of incorporation | Principal activities
| 2018 | 2017 |  |
Guangzhou Euro Tech Environmental Equipment Co., Ltd | 100%** | 100% | The PRC | Marketing and trading of water and waste water related process control, analytical and testing instruments, disinfection equipment, supplies and related automation systems
Yixing Pact Environmental Technology Co., Ltd | 58% | 58% | The PRC | Design, manufacturing and operation of water and waste water treatment machinery and equipment
Pact Asia Pacific Limited | 58% | 58% | The British Virgin Islands | Selling of environmental protection equipment, undertaking environment protection projects and providing relevant technology advice, training and services
Affiliates: |  |  |  |
Zhejiang Tianlan Environmental Protection Technology Co. Ltd. (“Blue Sky”) | 19.4% * | 19.4% * | The PRC | Design, general contract, equipment manufacturing, installation, testing and operation management of the treatment of waste gases emitted
Zhejiang Jiahuan Electronic Co. Ltd. | -*** | 20% | The PRC | Design and manufacturing of automatic control systems and electric voltage control equipment for electrostatic precipitators (air purification equipment)
* The Group’s interest in Blue Sky has been counted for as an affiliate using the equity method as the Group has representation on both the Board and Executive Committee of Blue Sky, and the ability to participate in the decision-making process. ** This company was closed on March 18, 2019. *** This affiliate was disposed on May 15, 2018.
ZHEJIANG TIANLAN |
Organisation and principal activities | Zhejiang Tianlan Environmental Protection Technology Company Limited (the “Company”) was incorporated in Hangzhou City, Zhejiang Province, the People's Republic of China (“PRC”) on May 18, 2000. The Company is a limited liability company by shares with an operating period up to long term. The Company provides a comprehensive service for design, general contract, equipment manufacturing, installation, testing and operation management of the treatment of waste gases emitted from various boilers and industrial furnaces of power plants, steel works and chemical plants since 2000. The Company has listed its shares on the New Third Board in the PRC since November 17, 2015 and suspended trading from August 15, 2017 and resumed trading on February 2, 2018. Details of the Company’s significant subsidiaries are summarised as follows:
Name |  | Percentage of equity ownership |  | Place of incorporation | Principal activities
|  | 2018 |  |  | 2017 |  |  |
Zhejiang Tianlan Environmental Engineering and Design Company Limited |  |  | -* |  |  |  | 100 | % | PRC | Provision of maintenance services of environmental protection equipment
Hangzhou Tianlan Environmental Protection Equipment Company Limited |  |  | 51 | % |  |  | 51 | % | PRC | Manufacturing and installation services of environmental protection equipment
Shihezi Tianlan Environmental Protection Technology Company Limited |  |  | -** |  |  |  | 100 | % | PRC | Provision of maintenance services of environmental protection equipment
Hangzhou Tianlian Environmental Testing Technology Company Limited |  |  | -* |  |  |  | 80 | % | PRC | Provision of testing services of environmental protection equipment
Hangzhou Tianlan Pure Environmental Protection Technology Company Limited |  |  | 51 | % |  |  | - |  | PRC | Manufacturing of environmental protection equipment
Hangzhou Tiancan Environmental Technology Company Limited |  |  | 100 | % |  |  | - |  | PRC | Manufacturing of environmental protection equipment
* These companies were disposed on January to February, 2018. ** This company was de-registration on February, 2018.

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