发泡型磨刷是一种经过树脂发泡处理的产品，其使用寿命长，加工效果细致，在研磨过程
中产生的碎屑非常小不会造成线路板基孔堵塞，同时其细致的加工线纹，避免了一些高密
度线路板加工过程中易发生的短路问题。
Foaming type non-woven abrasive brush is an after resin foaming processing products, the
service life is long , detailed research in processing effect .The debris generated in the process
of grinding is very small , will not cause the circuit board plug hole base .At the same time
detailed processing line , avoid The problem of short circuit of some high density circuit board
in the process is easy to occur.