GB/T 35850.1-2018 Programmable electronic systems in safety-related applications for lifts (elevators), escalators and moving walks—Part 1: Lifts (elevators) (PESSRAL)
2018GB/T 35850.1-2018 Programmable electronic systems in safety-related applications for lifts (elevators), escalators and moving walks—Part 1: Lifts (elevators) (PESSRAL)