The book is a book on the casting and electrolytic processing of precious-metal jewelries.The book involves identification and preparation method of traditional precious-metal jewelries, precious-metal electroplating and hollow electroplating, as well as popular small-animal gold plating, the method of copying and gold plating for body parts, recycle of gold and silver and so on. In the book, the author provides many formulas of the industry which are gains from the experience of several decades of exploration and very precious. The book is also attached with wonderful pictures.