Such is the desire to be without scruple the pleading, lead countless couples chase and achievement "instinct" classic, advanced overall forging process, to eliminate the crack appeared in the process of ring production, make the product the possibility of the density of the past five times beyond standard; 6 period of standard radian design makes its connection precision of the 0.1 mm, realize the acme, as years passed and comfortable and solid; More than 1000 times the inner circle feel test standard. The heavy and complicated process, simple and comfortable, this is the source of the classic.