Yes In 2006, 3d hard gold technology was successfully developed. In 2007, some 3d hard gold products were tried out in the national market. In 2008, the 3d hard gold craze swept across the country, and doubts followed; In 2009, 3d hard gold was popular in the market, and it shined brilliantly at the 2009 Shenzhen International Jewelry Fair. There are five hard gold promotion enterprises at the Expo, so there are 3d hard gold in 2009.