名詞
金器嘅評級,又叫做九九九金;根據商品説明條例,足金定義為按重量計,純金佔有99.9%,其餘0.1%係雜質 pure gold; Trade Descriptions Ordinance defines "Chuk Kam" where the whole article is of gold or gold alloy the fineness of which is not less than 999 parts by weight of gold in 1000 parts by weight of alloy, the weight of the article