Calidaddelaire（Hereinafter referred to as Cadair）cames from SpainHerver-9  group,，which Headquartered in Madrid, Spain. We have dedicated to providing reliable, ecological and environmental governance technologies and products to the world, striving to respect nature, return to nature, effectively implement energy conservation and emission reduction, and reduce pollution and impact on the environment. 

In the past 40 years,，Herver-9 group continues to innovate and develop，Making its brand long-lasting, it has formed a unique core competitive advantage for the enterprise, and its products are widely used in various parts of Europe and America. With the increasing demand for environmental protection in China, Herver-9 Group is optimistic about the Chinese market. In 2014, it entered China and conducted research and development, production, sales, and after-sales service businesses in China. Cadair is willing to bring its professional products and technology into China, bringing professional ecological environment governance solutions to China.