The handle is made of not only bamboo, wood, lacquer and porcelain, but also some precious materials including mother-of-pearl inlay, ivory and jade.
笔杆的材料不仅有竹子、木头、漆器和瓷器，也包括一些珍贵的材料如嵌螺钿、象牙和玉器。
2
As the shell porcelain and pearlporcelain are almost without industrial production, so they're too costly. That's to say bone China is the world's most recognized high-grade porcelain.