The repurchase price of gold bars of Agricultural Bank of China conforms to the international or Shanghai Gold Exchange quotation, and gold is recovered at the international gold recovery price minus 5. On this basis, invest in gold bars with 3 yuan per gram. The selling price of gold bars is not only based on the spot transaction price of Shanghai Gold Exchange, but also includes the storage fee and handling fee for gold bars purchased by institutions selling gold bars in Shanghai Gold Exchange, plus operating costs and profits, and even involves the foreign exchange market. The repurchase fee involves the cost of recasting and the refining fee caused by the lighter color after recasting. The price of gold bars is higher than the market price, and there is also a difference between the repurchase price and selling price of gold bars of Agricultural Bank of China.