... panels are available at the designated floors and on the lift platforms.——Heavy capacity ,Website:http://www.liftsplatform.com, platform ... or down, up, down and stop three buttons control the lift.——Great load capacity, 125% capacity load test. anti-skid ... device for failing protection.1. Explosion-proof valves: protect hydraulic pipe, anti-hydraulic pipe rupture.2. Spillover valve: It can prevent ...