电气及电子行业产品与服务的一般供货条件 General conditions of BECKHOFF Automation GmbH according to ZVEI (PDF file)
Beckhoff 软件产品的软件许可协议 License Agreement for Beckhoff Software Products (PDF file)
General conditions of BECKHOFF Automation GmbH according to ZVEI (PDF file) License Agreement for Beckhoff Software Products (PDF file) 
