- Ragnar Baldursson
- Wang Zhixuan
- Sun Yucai
- Sam Tong, Martin Green, Shi Dinghuan, Camaron Murray, Hartmut Nu
- Robin Welling
- Le Fook Chong (Global Commercial Manager Daqo New Energy)
- Darren Brown (Global Business Manager DEK)
- Steffen Schoft
- ceec2013-5912
- Robin Welling
- Malte Kottwitz
- Zheng Ruicheng
- Tobias Schwindt
- Sven Tetzlaff
- Prof. Yin Zhiqiang