... Application: For daily use items such as gold and silver jewelry, jewelry, headgear, brooches, glasses, bracelets, fountain pens, CDs, shaving knives, ... make this world the truth Xian exhaustive.3, jade, jewelry processing industry: In the grinding polishing process, a large number of dust ... dirt will be subject to a buildup in the jade, jewelry on, and these artifacts are often complex shape, ...