Pretty easy to find and plenty of reading for you on all aspects of FOX-ESS but it’s all worth the read.
You are correct they were established in 2019 and had sales revenue of $37.6 Billion and in 2020 had sales revenue of $42.4 Billion pretty significant for only second year in business oh and did I mention they are a Fortune 500 Company actually they are listed at #279 on that list, no small potato in my opinion pretty impressive actually.
Try looking at their parent company and do your own research https://www.tssgroup.com.cn/en/ Established 1988 Rank 279st in FORTUNE GLOBAL 500 Microphone Drop FINANCIAL STRENGTH Sales revenues in 2020 in excess of 42.4 billion USD.