Tool library, tool switching system for suitable products' mass production processing, can't only improve work efficiency and reduce the number of knives, but can also reduce the work intensity. Tool library, tool switching system for suitable products' mass production processing, can't only improve work efficiency and reduce the number of knives, but can also reduce the work intensity. Tool library, tool switching system bï yïn kony ba luɔɔi kënë ya looi. Yïn alëu bï yïn ya kuanycök në tooling switching devices juëc ye yïn looi.