Once woven, the material is sent to the BIS laboratories for testing. After quality testing, the material, if approved, is returned to the factory. It is then separated into three lots which are dyed saffron, white and green. The Ashoka Chakra is screen printed, stencilled or suitably embroidered onto each side of the white cloth. Care also has to be taken that the chakra is completely visible and synchronised on both sides. Three pieces of the required dimension, one of each colour, are then stitched together according to specifications and the final product is ironed and packed. The BIS then checks the colours and only then can the flag be sold.