丝印

丝印：https://v.qq.com/x/page/o08191q8ria.html    https://v.qq.com/x/page/g0819g8js8x.html

https://www.bilibili.com/video/av20138445/?spm_id_from=333.788.videocard.4

 

3D打印表面处理：https://www.bilibili.com/video/av7826233?from=search&seid=6309475342540324134

https://www.bilibili.com/video/av16352318/?spm_id_from=333.788.videocard.0