![Ming Liang Ma](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Ming Liang Ma was the Chairman-Supervisory Board of Ruitai Materials Technology Co., Ltd., Chairman & President of Sinoma Energy Conservation Ltd., and Member-Supervisory Board of China Testing & Certification International Group Co., Ltd.
| Unternehmen | Position | Ende |
|---|---|---|
| RUITAI MATERIALS TECHNOLOGY CO., LTD. | Vorsitzender | 20.11.2021 |
| SINOMA ENERGY CONSERVATION LTD. | Vorsitzender | - |
| CHINA TESTING & CERTIFICATION INTERNATIONAL GROUP CO.,LTD. | Direktor/Vorstandsmitglied | - |
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Börsennotierte Unternehmen
Private Unternehmen
| Private Unternehmen | 3 |
|---|---|
Ruitai Materials Technology Co., Ltd.
 Ruitai Materials Technology Co., Ltd. Other Metals/MineralsNon-Energy Minerals Manufactures and distributes refractory materials | Non-Energy Minerals |
Sinoma Energy Conservation Ltd.
 Sinoma Energy Conservation Ltd. Engineering & ConstructionIndustrial Services Provides energy conservation and environmental protection engineering services | Industrial Services |
China Testing & Certification International Group Co., Ltd.
 China Testing & Certification International Group Co., Ltd. Miscellaneous Commercial ServicesCommercial Services Provides inspection and certification services | Commercial Services |
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