GB/T 35850.2-2019 Programmable electronic systems in safety-related applications for lifts (elevators), escalators and moving walks—Part 2: Escalators and moving walks (PESSRAE)
2019GB/T 35850.2-2019 Programmable electronic systems in safety-related applications for lifts (elevators), escalators and moving walks—Part 2: Escalators and moving walks (PESSRAE)