Excuse me, is there a brand standard for elevator counterweight

Yes Elevator counterweight, commonly known as counterweight, is an integral part of elevator traction system. Manufacturers will have their own standards in production. The conventional counterweight standard is 25kg weight. The elevator counterweight is used to balance the weight of the car, so that the difference between the car and the counterweight is kept within a limited range when the elevator works, and the normal operation of the elevator is guaranteed.