Really, according to the data of jade restoration, Laosu jade restoration refers to an antique restoration technology founded by Mr. Su Yulin, a jade restorer in Nanjing, Jiangsu Province. Mr. Su Yulin summed up a complete set of antique restoration methods in his long-term practice, and won the trust and praise of collectors and museums with his exquisite skills and rigorous attitude, so he is more credible. Jade is a mineral, including nephrite and jadeite. Usually jade refers to nephrite, which belongs to the most common jewelry.