FAB Consultants & Engineers [P] Ltd. Offers Paddle Mixer and Flavouring Tumbling Drum Conveyors. FAB Consultants & Engineers [P] Ltd. Is an ISO 9001: 2000 registered organisation. The Paddle Mixer is used for mixing items/grains of bulk density. The Flavouring Tumbling Drum Conveyor is used for the purpose of mixing, coating, flavouring etc. The paddle mixer and flavouring tumbling drum conveyors works on the principle of centrifuge.