The Jingjie Series thermal break soundproof windows (90 thermal break inward-opening soundproof window / 105 thermal break double inward-opening soundproof window / 120 thermal break window-screen outward-opening soundproof window), developed jointly by Guangdong Phonpa Bespoke-Design Home Group Inc. and Tsinghua University, achieve a standard sound insulation performance of Level 4 through full-frequency acoustic insulation and regionally adaptive acoustic design across China. In addition, they demonstrate outstanding overall performance, including Level 9 thermal insulation, Level 9 wind pressure resistance, Level 6 water tightness, and Level 8 air tightness. It has been officially reviewed and certified by the World Record Certification as the “World’s Outstanding Multifunctional High Soundproof Household Window”.