(c)members, equal in number to members nominat ed under clause (b), to be nominated by the Central Government, to represent the following, namely:—(i)the Central Government;(ii)the Bureau of Indian Standards;(iii)boiler and boiler components manufactures;(iv)National laboratories;(v)engineering consultancy agencies;(vi)users of boilers; and(vii)such other interests which, in the opinion of the Central Government, ought to be represented on the Board;