What are the main fields that recruitment websites such as Worry-Free Future, ChinaHR.com and Zhaopin.com face?

At present, the mainstream of job hunting in Shenzhen is China cjol, with a market share of over 60%, which is almost dominant. Most of the Shenzhen customers who cooperate with 5 1.com, Zhilian and Cai Ying are large enterprises, and they are recruited for the whole country. Some small and medium-sized enterprises mainly try out. However, cjol's website is similar in nature to 5 1.com, and Zhilian and Cai Ying belong to comprehensive websites. Because its influence is limited to the Pearl River Delta, it is an out-and-out local network. As the saying goes, a strong dragon cannot beat a local strongman.