This work was made by Al Riaz Uddin and released under the license(s) stated below. Please feel free to use it for any purpose as long as you credit Riaz as author and follow the terms of the chosen license. If you use this work outside of the Wikimedia projects, I would very much like to get a message from you. Thanks!
许可协议
The uploader of this file has agreed to the Wikimedia Foundation 3D patent license: This file and any 3D objects depicted in the file are both my own work. I hereby grant to each user, maker, or distributor of the object depicted in the file a worldwide, royalty-free, fully-paid-up, nonexclusive, irrevocable and perpetual license at no additional cost under any patent or patent application I own now or in the future, to make, have made, use, offer to sell, sell, import, and distribute this file and any 3D objects depicted in the file that would otherwise infringe any claims of any patents I hold now or in the future. Please note that in the event of any differences in meaning or interpretation between the original English version of this license and a translation, the original English version takes precedence.