Engineering services in the nature of designing power-operated metal bollards that can be raised or retracted electro-mechanically, concrete bollards, metal guard barriers, power-operated wedge security barriers and rising plate security barriers that all can be raised or retracted electro-mechanically

power operated lift metal bollards, concrete bollards and metal guard barriers for security purposes; power operated wedge security barriers, rising plate security barriers

hydraulic lift metal bollards, concrete bollards and metal guard barriers for security purposes; power operated lift metal bollards, concrete bollards and metal guard barriers for security purposes; power operated wedge security barriers, rising plate security barriers, crash beams and sliding gates for security purposes