The history and role of greenhouses: greenhouses range of applications under development. Especially for low temperature resist drought and sand hazards plays a major role in the alpine region, Shahuang and arid regions. Countries in the world for the development of agricultural production and has built greenhouses, Japan in the late 1970s greenhouses area of ??10-20 hectares. Spain 阿尔梅里利 area land area of ??315 square kilometers of all new conservatory manufacturer, is arid areas, in order to develop vegetable production and greenhouses covering 120 square kilometers, is the world's largest greenhouse. Features greenhouses: humidity conditions. Cultivation cultivation season and conditions of plastic greenhouses in spring, summer, and autumn. Winter minimum temperature of -15 ℃ --17 ℃ areas, hardy crops that can be used in the studio cold winter. Alpine regions, arid regions can use early on in the greenhouse cultivation. The new greenhouse construction in northern regions, in winter the new greenhouse construction projects in the greenhouse nursery for seedlings in early spring to early planting in the greenhouse, were precocious cultivation. The new greenhouse quote _ Communications Technology (certified) _ Shijiazhuang new conservatory provided by Anyang City Communications Technology Limited. Anyang City Communications Technology Co., Ltd. (www.aytlkj.com) is Anyang, a leader in agricultural supplies, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Communications technology leadership in the staff warmly welcome all inquiries negotiations to create a better future for Communications Technology.