优彩资源：取得专利证书，专利名称为“一种再生低熔点聚酯的制备方法”等

Group 1 - The core point of the article highlights that Youcai Resources announced the receipt of a patent grant notification from the National Intellectual Property Administration for two methods related to the preparation of recycled low-melting-point polyester and recycled low-melting-point copolyester [1] Group 2 - The article also reports on the bankruptcy liquidation of Baolide, a major automotive sales company known for selling luxury cars such as Rolls-Royce and Porsche, with its headquarters in Hangzhou now vacant and its subsidiary in Yiwu sealed [1]