- Yuyao Xianglong Communication Industrial Co., Ltd. was established in 2005 and mainly specialized in the production of industrial and military communication telephone handsets, cradles, keypads and related accessories.
- Ningbo Joiwo Explosion-Proof Science and Technology Co., Ltd. was established in 2011 and it is professional in all kinds of industrial telephones, telephone systems, waterproof telephones and jail phones with the source from Yuyao Xianglong Communication.
- In 2017, we registered SINIWO Industries (Hong Kong) Limited, which is positioned in the development of manufacturing industry and expand its business by acquisitions and holdings of other outstanding companies and factories and it also pays much attention to investment and development of newly-emerging industries.