What are the top switching power supply manufacturers in China at present?

There are many power sources in China, the famous ones are mainly concentrated in Japan and Taiwan Province Province. There are mainly Murata and Delta. Domestically, Tianbao has sprung up in recent years and has done well. Small and medium-sized, using Dongguan Tengmao power supply, the quality is not bad. Others can be found online. I hope it works for you! thank you