1. government category: China government procurement network and national public resource trading platform are all government bidding platforms. In addition to these two, all provinces and cities also have their own government procurement networks, which can be queried by the public resource trading platforms of all provinces and cities.
2. Many large enterprises have their own bidding websites, such as China Railway and Sinopec, and the inquiries are free. If you want to cooperate with the enterprise, you can go directly to the bidding website of the enterprise to inquire.
3. Schools, hospitals and other institutions mainly publish on their own official website. If you want to cooperate with these institutions, you can go directly to their official website, so that the information you find is more targeted.
4. If the software recommends it, I am currently using the standard message of the whole network, which is ok for me personally. It can be searched in 3 1 provinces, municipalities and autonomous regions across the country. As you said, the tender announcement and project information can be directly searched, which is more convenient.
Now there are all kinds of websites and software on the Internet, you can choose according to your own needs.