What can I use with the old Jing Xian 15?

Jingxian county hard type 15. According to the relevant public information, the old Jingxian 15 connector can be used with Jingxian Hard Rod 15, which is a fixed match, but other models can't match, so the old Jingxian 15 connector can be used with Jingxian Hard Rod15. Jingxian (Shanghai) Industrial Co., Ltd., founded on 20 12, is located in Shanghai, and is a wholesale-oriented enterprise.