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    In 2001, Beijing HANS-ROCK Building Materials Limited Corporation signed an agreement on general agency in Chinese region with German Belschner GmbH. HANS-ROCK became the first brand of high-end doors and windows imported from Germany to Chinese market. Its products successively enter into major cities of China, including Beijing, Taiyuan, Qinhuangdao, Shanghai, Nanjing, Hangzhou, Suzhou, Langfang, Harbin, Shenzhen, Changchun, Baoding, Shantou, etc. In 2005, HANS-ROCK began to be engaged in the projects for custom-made doors and windows of villa with Chinese style and successfully applied the grids of traditional Chinese architecture to its products, which made it a model for other enterprises to follow. In 2008, HANS-ROCK entered into the southern market. It carried out adaptive innovation of the aluminum-wood composite Wintergarden system to the difference of temperature and humidity, which broke the traditional concept inherent in these regions. In 2012, it entered into the northeastern market. Owing to the harsh weather conditions in local areas, HANS-ROCK worked out the solutions of custom-made doors and windows that keep warm. In 2013, HANS-ROCK joined in the online shopping platform of Hong-Xing-Meikailong Xing-Yi-Jia, which is the only official flagship shop apart from its official website. In 2014, HANS-ROCK undertook the project to renovate the doors and windows of ancient houses protected as antiques for the first time and raised the custom-made doors and windows to an unprecedented height. HANS-ROCK doors and windows have excellent external shapes and intelligent internal connotation. Meanwhile they have an understanding of professional products, designing concepts and unique construction aesthetic taste as well. All of these qualities enable them to rapidly occupy high-end market of doors, windows, and Wintergarden as well, and become popular with those top designers.