Do tenders have to be de-branded? For example, is there a law on reseller-based purchases such as printers?

Hello, I don't know the nature of the organization you belong to.

Generally speaking, private sector tenders do not have this restriction, after all, it is someone else's needs.

But if it's a government agency's bidding program, it's restricted by the Government Procurement Law.

It is clear that the procurement behavior of government agencies to prevent the phenomenon of doing whatever they want to happen, so in the bidding, unless special circumstances, or not allowed to characterize the brand of goods. Specific provisions:

Article 25 The parties to government procurement shall not collude with each other to the detriment of the interests of the state, the interests of the social public **** and the lawful rights and interests of other parties; shall not exclude other suppliers from participating in the competition by any means.

While I don't know where you're coming from, it's clear from the French that "other oh you suppliers shall not be excluded by any means from participating in the competition", and whether you realize it or not, the law is about objectivity.

I hope this helps, thanks.