(1) Part 18E of the Principal Act is amended -

(a) in section 531AAG -

(i) in the definition of "concrete", by the substitution of "coarse or fine aggregate (or a combination thereof)" for "coarse and fine aggregate",

(ii) in the definition of "concrete product", by the substitution of the following paragraph for paragraph (b):

"(b) ready to pour concrete;",

and

(iii) by the insertion of the following definitions:

"'precast concrete product' is a product which -

(a) contains concrete,

(b) is manufactured in a specially equipped facility through a process of -

(i) casting the concrete in a reusable mould or form, and

(ii) curing the concrete in a controlled environment,

(c) following manufacture, is transported from the facility to -

(i) a premises or place in or on which the product will be made available for wholesale or retail sale,

(ii) a construction site, or