At present, we have obtained A-level certificates for special equipment manufacturing licenses issued by the General Administration of Quality Supervision, Inspection and Quarantine of China, including PJS type three-layer and below, PSH type seven layer and below, PCS type twenty-five layer and below, PPY type eleven layer and below, and PJSL type two-layer. We also have installation, maintenance, and renovation qualifications issued by the provincial bureau, as well as multiple domestic and international new patents and invention patents.