Built in 2002, Shenzhen Zhonggang International Jewelry Trade Center has gathered about 200 jewelers including the ones in Hong Kong and Taiwan.  It is the largest, most complete and mature professional jewelry market.  The first floor of Zhonggang Center is the retail market of gold and Jewelry, while its second floor is the whole sales for the fashionable silver, jade, pearl and inlay accessories.  With over 30 well-known brands, this market has been the jewelry retail market with the highest transaction rate.  The fifth floor is a multi-functional conference hall for the jewelers, including the jewelry training, saloon, cocktail party, book bar and Internet bar.  The three media of Zhonggang, that is, Zhonggang Jewelry website”, “Zhonggang Jewelry Updated” & “Zhonggang Jewelry fashion”, put a great effect to the jewelry industry.