Blended tea not exported from bond

Tea which is blended in and exported from any part of the Commonwealth otherwise than from bond or under drawback, shall be entitled to preference in respect of that proportion of the blend which is certified by the supplier by invoices and certificates in the forms in Schedules A and B hereto respectively, provided that such invoices and certificates are accompanied by a declaration by the exporter that the tea (a) consists entirely of produce of the Commonwealth; or (b) in case of blends containing tea of non- Commonwealth origin, consists of blends containing a stated percentage of Commonwealth tea, the country of production of such tea being specified, provided that if such tea, either before or after blending, is transhipped or landed at any foreign port or place, then the general regulations dealing with goods ordinarily transhipped or landed at such port or place shall have effect.