... directional control impact and high reliability;Automatic retraction of concrete piston makes it easier to check or replace the ... type is prompted; multiple automatic protections are provided.Our 43M Truck-mounted Concrete Pump class includes SY5310THB43B, SY5310THB43R, SY5310THB43V, SY5313THB43, SYG5310THB43V. For ... Our people will contact you as soon as possible. 43M Truck-mounted Concrete Pump