Zhejiang Shi Ang Building Energy-saving Technology Co., Ltd. is headquartered in Hangzhou, Zhejiang, a world-renowned historical and cultural tourism city. With an annual production capacity exceeding 8 million square meters and the introduction of production lines from Germany and Italy, the company is currently one of the strongest enterprises in China in terms of comprehensive strength. It is also one of the earliest manufacturers of energy-saving materials such as waterproof breathable membranes (breathable paper), barrier films, and vapor barrier films. The sales headquarters is located in Hangzhou Future Science and Technology City. We boast two strong brands, "Onyx. ANGSHI" and "Tepuyou", with main products including waterproof breathable membranes, barrier films, vapor barrier films, and breathable paper. Our products are stable in quality, high in tensile strength, and excellent in waterproof and breathable performance. Among them, the patented TPU waterproof breathable membrane has received unanimous praise from customers due to its unique formula and stable quality. Leveraging advanced equipment, robust technical strength, rigorous scientific management, and a professional installation team, the company has continued to grow and expand. We are confident and capable of providing customers with high-quality products and services. Zhejiang Shi Ang Building Energy-saving Technology Co., Ltd. Has obtained ISO 9001: 2015 quality management system certification and CE certification from the European Union. It is a member unit of the Steel Structure Association, a group member of the China Steel Structure Association, a member of the China Light Steel Residential Building Association, and a member of the Metal Roofing Branch of the China Building Waterproofing Association. In 2014, we were invited to participate in the compilation of the first domestic industry standard for waterproof breathable membranes, JC/T2291-2014 "Permeable Waterproof Breathable Layer". In 2020, we co-edited the "Near-zero Energy Consumption Building Waterproof Breathable Layer" and "Breathable Layer Material Evaluation Standard". Since its establishment, Hangzhou Onyx Building Energy-saving Technology Co., Ltd. Has won numerous honors and awards, including the Prefabricated Building Brand Enterprise, the Prefabrication Industry Innovation Second Prize, and the Word of Mouth First Prize. After more than a decade of development, the company has served over 2, 000 well-known projects in China, such as Nanjing Lukou International Airport, Chongqing Jiangbei International Airport, Western China International Expo Center, the iconic venue of the Beijing Winter Olympics - the National Speed Skating Stadium ("Ice Silk Belt"), Beijing Fengtai Station, Hangzhou West Station, Hangzhou Asian Games Main Stadium, Lanzhou Olympic Sports Center, Fuyang Airport, Lu'an Sports Center, as well as well-known enterprises such as Alibaba, Huawei, Tencent, JD. COM, BMW Brilliance, Chengdu Aircraft Industry Group, Commercial Aircraft Corporation of China, Shanghai Disneyland, Boeing, Nongfu Spring, Gree Air Conditioning, CATL, Guoxuan Gaoke, Longji, JA Solar, and Zhonghuan