Xie Long began in 1990, the Shanghai Diamond Exchange (Shanghai Diamond Exchange) members. After decades of hard work, the company has developed into the existing scale, accumulated rich experience in the industry and master the resources of the industry.2000 entered the information age, the first time to set up cilong network sales department, the establishment of official website (WWW.XIELONG.CN), cilong released weekly about hundreds of new products. With many years of experience in network marketing, a growing number of customers today cilong.In 2008 in Hongkong set up a special cilong procurement company, owned by DTC and a number of large cutting gems factory close long-term cooperation, the main wholesale globally recognized high-end 3EX, fluorescent white diamond colored diamonds, size from 0.002 to 10 kt.Colored gemstones, cilong in 2013 and is located in the sabaragamuwa province of Sri Lanka (Ratnapura) of the Ratnapura region (Niriella, Pallekumbura) senior Jewel Companies invested mining area of 10000 square hectares of raw stone mine, deep color treasure industry has brought unlimited prospects for the development of the company.