What companies in China produce satellite receivers? Please give more detailed information, thank you!

In the past, many regular manufacturers produced satellite receivers, such as Tiancheng, Tongzhou, Jiuzhou, ATV, Huangshi, Zhuo Yi, Changhong, Skyworth, galaxy electronics, Shenzhou, Gosbell, Jinya Technology, Jiulian Technology, Shang Bo, etc., but with the passage of time, these manufacturers no longer produced satellite receivers.

Now the satellite receivers on the market are all from small family workshops. Their common characteristics are rough workmanship, simple function and poor quality. There is no S-terminal output on the machine, only one set of audio output, and the picture is rough and the sound is dry, which makes it uncomfortable to watch and use!

Now I can't find the names of those regular manufacturers on the internet, and now I can imagine the small family workshops.