More rapidly technology developed,more precise PCB required.IS brush technology deriving from Italy,made high quality nylon together with stainless steel(SUS304) belt and Thread by spiral wound techniques,with the associated reaction among thread nylon hair brush. IS(or ALO powder) and water,can polish razor-thin PCB whatever its' thickness is between 0.05mm and 5mm with high slender thread. Meanwhile, it does no block or crinkle to the boards.And today it is more often used.
        IS brush roller of BR,with high quality and high productive,has a absolute superiority in PCB industry in the mainland.