W.e.f 1st April 2022 in notification 10/2019, in the Table, after serial number 3 and the entries relating thereto, the following serial numbers and entries shall be inserted, namely:

4 – 6815 – Fly ash bricks or flyash aggregate with 90 per cent. or more fly ash content; Fly ash blocks
5 – 6901 00 10 – Bricks of fossil meals or similar siliceous earths
6 – 6904 10 00 – Building Bricks
7 – 6905 10 00 – Earthen or roofing tiles.