I don't know about Sichuan, but there is a company in Yulin, Guangxi called "Zhanmin castration cooperative" that is engaged in castration technology training. They have invented new castration tools and applied for national technology patents, and CCTV has also made a special report on their technology. Those castration tools are operated by one person and three people. The castration speed is very fast, and the mortality rate of castrated chickens is very low.

You might as well go to their website to find out: www.zmyanji.com.