苏州固锝：子公司苏州晶银继续保持行业技术领先态势

Group 1 - The company Suzhou Guder continues to maintain a leading position in industry technology, as stated in their response to investor inquiries on December 3 [2] - The subsidiary Suzhou Jingyin has achieved significant results in de-silvering research and development, with a silver content of 10% in their silver-coated copper products now reaching mass production [2]