Structure type greenhouses: the greenhouse in early spring stamped shed, Pengwen can increase 2-4 ℃ plastic vegetable greenhouses offer, Beijing area in the shed covered with straw mat stamped shed, January to shed before sunrise observation temperature can be increased by about 5 ℃. Multilayer film covering also get better results. Greenhouses covering an area larger space large plastic greenhouses thermal effect is good, easy to build, and low cost, is the current application of the broader protection facilities. Features greenhouses: the greenhouse air component. Because of mulch, greenhouse air flow and exchange restrictions, tall plants in the vegetable, leafy vegetable greenhouse construction plastic changes in circumstances, shed carbon dioxide concentration in the air is very intense. Before sunrise the morning due to the release of crop and soil respiration, shed carbon dioxide concentration is 2-3 times higher than the concentration Pengwai plastic greenhouse vegetables prices (about 330PPM); 8-9 while later, with the leaf photosynthesis increases, can be reduced to 100PPM below. Plastic vegetable greenhouses construction company, Communications Technology (certified), plastic vegetable greenhouses 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.