Vardhaman I.Q. Toys Mfg. Co. Manufactures Colossal Spring Trampoline Play Equipment. Vardhaman I.Q. Toys Mfg. Co. Offers wooden educational play equipments for children. Colossal Spring Trampoline Play Equipments are made from galvenies to assemble at sites. These play equipments are available in mine steel or galvenies and have indoor and outdoor uses. The Colossal Spring Trampoline Play Equipments are used by the young ones for the purpose to jump on pad. They also promote and develop gross motor co-ordination and confidence in kids and are available in approx. 3600mm diameter x 600mm height.