1. Seal of the parties to the contract: that is, both parties to the fire fighting project contract, such as the fire fighting equipment company and Party A of the contract, need to seal the contract.
2. Company seal: Fire equipment companies or enterprises and institutions need to use their corporate seal, official seal or other business seals for confirmation.
3. Seal of the supervision unit: the fire protection project needs supervision, and the supervision unit needs to use its corporate seal, company seal or customer seal for confirmation.
4. Seal of the supervision unit: the fire protection project needs supervision, and the supervision unit needs to use its corporate seal, company seal or customer seal for confirmation.