Longquan osteotome technology is more complicated. The reason why Longquan osteotome is more expensive than Zhang Xiaoquan is that Longquan osteotome has more complicated technology, better material and better quality. Zhang Xiaoquan brand became famous in 1628 (the first year of Chongzhen in Ming Dynasty). It is a time-honored brand in China and a well-known trademark in China.