Safe. The builder's electronic registration certificate adopts electronic signature technology, and at the same time, it is stamped with electronic seal, electronic certificate mark and anti-counterfeiting QR code. Its information is true and effective, which can be identified by the national registration certificate inquiry system. Moreover, the registration certificate is often stored in the enterprise, and the enterprise often keeps it on behalf of the individual in order to maintain the qualification and bid, so it is safe to give the electronic registration certificate of the builder to the enterprise.