Guangrao is also known as home to the Qi type of writing brushes. Due to their exquisite craftsmanship, the writing brushes made here are regarded as one of the top four brands in China.

广饶还有“齐国笔乡”的美称，精密的工序、细腻的做工成就了中国四大名笔之一的齐笔。

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This paper discussed one type scan-aborted malfunction which is caused by carbon-brushes' contact-capability abated in the Helical CT, and summarized carbon-brushes general maintenance method.

探讨螺旋CT的滑环接触性能变差后常见的扫描中断故障，并结合实践总结出了滑环维护保养的一般方法。

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Though still classic in design (some have two and three heads to make veins and layers), the length and type of hair for the brushes have been changed to accommodate water-based paint, which the industry has embraced in place of oil-based paint.

WSJ: An Artisan Who Can Turn Paint into Stone | Creating