We designed, produced and constructed some door and window systems for the West Lake State Guesthouse in Hangzhou to meet the hotel's strict requirements for sound insulation, heat insulation, privacy and comfort. The project uses T-66 aluminum alloy profiles and high-performance system doors and windows, with hollow glass and special sealing structure to effectively block noise and heat, providing patients with a quiet and exclusive leisure environment. The final result significantly improved the hotel's diagnosis and treatment environment, creating a comfortable and private space for guests and staff, and reducing operating costs through energy-saving design. It has been highly recognized by the hotel and demonstrated our professional strength and service level in the field of hotel building doors and windows.