Take gold bars and coins for example. They all go through the processes of smelting, tabletting, blank cutting, blank pressing, quenching, acid frying, polishing, pressing and edge pressing. The working environment cannot be a vacuum environment. Every link may encounter dust and impurities in the air attached to the blank of the product. These impurities may become erythema after being stored for a period of time without quenching and pickling.

Extended data

According to the statistics released by China Gold Association recently, in the first half of 20 15, the national gold output reached 228.735 tons, an increase of 17.662 tons over the same period of 20 14, and an increase of 8.37% year-on-year. Among them, gold minerals 19 1.689 tons were completed, and colored by-products were 37.046 tons.

At the same time, the consumption of gold in China decreased. In the first half of 20 15, the national gold consumption was 56 1.35 tons, which was 8. 10 tons lower than that in the same period of 20 14, with a decrease of 1.42%. Among them, gold for jewelry manufacturing industry was 4 12.29 tons, down 3.26% year-on-year, gold for gold bars and coins was 102. 13 tons, and gold for industry and others was 46.93 tons.

According to the analysis report of China Gold Industry Market Prospect and Investment Strategic Planning, from April 20 13 to the middle of 20 15, the international gold price has been in a downturn after a sharp drop. Judging from the global economic situation, the world economic growth rate may pick up slightly in 20 15, but the overall recovery is weak. The volatility of international financial markets and commodity markets has intensified, and non-economic factors such as geopolitics have a greater impact, and there are still many uncertain factors. With the strengthening of the US dollar, the prices of commodities such as gold, non-ferrous metals and oil are all running at a low level at 20 15, and the low price of gold may become the "new normal" in the next few years.

First of all, gold investment is mainly divided into physical gold, gold T+D, paper gold, spot gold, international spot gold (commonly known as London gold), futures gold, gold advance payment and people's livelihood gold, which are eight popular forms of gold investment.

Physical gold, buying and selling gold in kind by buying and selling gold bars and ornaments. Physical gold: in the form of 1: 1, that is, no matter how much gold is purchased in any currency, it can preserve its value, and it can only buy up, but not down, with a large amount of investment and complicated procedures and expenses. It's hard to tell true from false.