Hong Kong Regulations

TRADE DESCRIPTIONS (MARKING) (PLATINUM) ORDER - PARAGRAPH 5

Articles of differing fineness

(1) Subject to subparagraph (4), where an article mentioned in paragraph 4
consists of different parts which are of different finenesses of platinum,
then either-

   (a)  each part shall be marked as if it were a separate article; or

   (b)  one mark shall be affixed which shall be that of the fineness of the
        article as a whole.

(2) Where an article mentioned in paragraph 4 consists of different parts one
or more of which are platinum and another or others are of another metal, the
part or parts of which are platinum shall be marked under paragraph 4 and the
other part or parts shall be described in the invoice or receipt supplied
under paragraph 6.

(3) The solder used in an article shall not be less than 95% by weight of
gold, platinum, palladium or silver or a combination of 2 or more of them, and
shall not be less than 50% by weight of gold, platinum or palladium or a
combination of 2 or more of them.

(4) Where the solder of an article constitutes not more than 5% of the
finished article, the finished article may be marked with the standard 
of fineness of the main body. (Enacted 1988)