It is suggested that PTSL graduate first, and then use DPS to go to HFB. HFB has low requirements for deposit protection schemes. If it fails, you can send someone. Basically, t doesn't need any FB equipment. The equipment of HSL must be graduated before it can be changed. Forged shield can be used for black-faced high-speed synchronous motor. Wristbands are basically 400G for 2 13GS. I remember that forged shoes were used for a long time in the early stage and were very cheap. Other parts of HSL haven't changed brands, and clothes don't look so good. If you want to change the brand, there are other parts of SL. After that, HFB will be fine.