1. School of Mechanical & Automobile Engineering, Qingdao University of Technology, Qingdao, P.R. China.
2. Shenzhen Dazhou Medical Technology Co., Ltd., Shenzhen, P.R. China.
3. Center of Biomedical Materials 3D Printing, National Engineering Laboratory for Polymer Complex Structure Additive Manufacturing, Baoding, P.R. China.
4. Key Lab of Industrial Fluid Energy Conservation and Pollution Control, Ministry of Education, Qingdao, P.R. China.