We don't have synonyms for paktong yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are pakfong and patong.
(n) :
An alloy of zinc, copper and nickel, closely resembling silver, of Chinese origin; any of a number of similar alloys developed in imitation of the Chinese product.
(n) :
An alloy of zinc, copper and nickel, closely resembling silver, of Chinese origin; any of a number of similar alloys developed in imitation of the Chinese product.