What is the relationship between WANNAN and SINO CNC?

What is the relationship between WANNAN and SINO CNC?

What is the relationship between WANNAN and SINO CNC?
Huangshan Wannan Machinery Co.,Ltd. who was established in 1928. Start with conventional milling mahchine, it develops into a National High-tech Enterprise which has independent R&D ability on CNC knee-type milling machine, vertical machining center, horizontal machining center and double column machining center.

In 2017, WANNAN change the name to SINO for IPO.