(2. To obtain a contact point coordinate - "Operation and Use of Multi point Contact" course, please download all the contents of this video tutorial in the special topic. I have many updated tutorials such as massive software development, function optimization, and network development. You can click my user name to check various resources I have published
2. Obtain a contact point coordinate - Operation and Use of Multi point Contact - produced by Geek Academy - Geek Academy. mp4
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