Thai style button grinding polishing copper clad side hollow out money are rmendedChapter nine, ThaiSize, 21 cm long, 13.5 cm wide, 14 cm highAccording to records, history is a kind of special decoration processing method, namely between Siam (now Thailand) custom purple sand tea pot, we call it "polished"."Car polishing" also known as the "light", is one of the violet arenaceous the finished surface processing methods.After polishing processing form a layer of glass phase on the surface of purple sheen..Grinding and polishing is thefor thousands of years of the technique, it has, but not seen in purple.The reason is that americans for violet arenaceous, more like the plain one heart, and the feel of the bubble after raising a jade.