Siemens and Zhejiang have enjoyed very good cooperation since the early 1930s when Siemens provided frequency repeater telephones to the city of Hangzhou in 1933.

• 西门子和浙江省自上世纪三十年代初就建立了良好的合作关系，早在30年代，西门子就为杭州提供了频率增音电话。