天畅环保携节能耐火窗参加天津华惠设计院防火窗技术推广会

Tianchang Environmental Protection brought energy-saving fire-resistant Windows to participate in Tianjin Huahui Design Institute fire-resistant window technology promotion meeting

公司销售人员在防火窗技术推广会上讲解天畅耐火窗产品性能资料

Company sales staff in the fire window technology promotion meeting to explain Tianchang fire window product performance data