What other engineering information networks are there like Ruidaheng and Tianchen? Which is better?

These two are the good ones with large scale, which are relatively complete. The branches of these two companies are located in various places, which makes the information localized. Ruidaheng has more branches than Tianchen. The more branches there are, the more natural information sources there are, and the local information will naturally be timely and accurate. As for which one suits you, you can try to compare it.