已经有次观看 wencong在2013-07-23发布

Channel：Tungsten 标签： tungsten,  Tungsten  gold  jewelry 

简介：Tungsten is rare in the world a colored minerals, the annual output is very low, very versatile ingredient of material is mainly used for casting. Tungsten gold produced through a special process known as tungsten jewelry gold jewelry is the most popular among young people in recent years, the jewelry.