A barrier is a physical structure which restricts the unauthorized vehicle to pass through. It is one of the dealers for security products, which includes Bollard, Boom, Queue, Tripod Turnstile, and Flap.Bollard barriers are used in Industrial areas, residential areas to prevent the unauthenticated entry. Boom barriers are used in parking facilities, level crossings etc., Queue barriers are used for allowing and exit of people. Tripod turnstile barriers are used for access control and it is easier to access. Flap barrier is also a gateways as other systems. Dhonaadhi is one of the leading marketers in southern part of India. It deals with supply of barriers and fulfill their requirements. For more details, visit our website @ http://www.dhonaadhi.in