Required. According to the "Safe Operating Procedures for Low-Voltage Electrical Work", low-voltage construction work tickets need to be signed and confirmed by both parties (i.e. "dual issuance") under the condition of "safe use after confirmation by on-site supervisors". Among them, one of the "parties" is the representative of the person or department receiving electrical work services, and the other party is the construction worker who signs the confirmation on behalf of the construction unit to ensure safety during low-voltage electrical work.