China aluminum crank windows YY history SHANGHAI YY WINDOWS CO., LTD With more than 50,000 square meters of manufacturing area and 20 years of production experience, the company specializes in research, development and production. Adopt European advanced high-end systems for doors and windows, curtain walls, glass, sunshade shutters, handrails and smart doors. Design concept and production technology to comprehensively improve product performance. YY FACADES is proud of its independent research and development of innovative production technology and independent research and development. Development of product systems. After nearly 20 years of development, YY FACADES has become a large-scale, specialized and systematic product exported to Oceania, North America, South America, Europe, Southeast Asia and other countries. With fully automatic CNC production line, scientific system product technology, skilled technical engineers, professional product designers and high-quality production team, it provides a strong guarantee for the production of high-quality doors and windows. The doors and windows are novel in structure and rich in variety. In line with the mission of "unity and dedication, providing first-class products and first-class services", the YY team is committed to providing customers with the best products and services. Quality Inspection Door and window impact test 5000 square meters workshop Package Production Market Main Market : North America, Australia Our Service Before purchasing 鈼?Professional consultants provide you with the most suitable solution 鈼廤elcome to visit our factory and workshop. 鈼?Free samples for your team to check the quality. 鈼?YY team responds efficiently After placing an order 鈼?Experienced project team manages the entire project 鈼?Free workshop drawings 鈼?Provide samples for approval 鈼?Production process report 鈼?Weekly meetings available After-sales service 鈼?10 years warranty 鈼?Free replacement in case of quality problems 鈼?Online technical and installation support Exhibition China aluminum crank windows website:http://www.yywindowssuppliers.com/ website2:http://www.yywindowssupplier.com/