Greenhouse covering material: 1, ordinary film: polyethylene or polyvinyl chloride as raw townhouses nursery greenhouses design, the thickness of 0.1 mm, colorless and transparent. Life of about six months. 2, multi longevity film: polyethylene blow molding process in an appropriate amount of anti-aging material and surfactant made life twice as long than ordinary film night Pengwen than other materials high 1-2 ℃. And the film is hard to form droplets, good coverage. Features greenhouses: the greenhouse air component. Due to high quality film covering multi-span greenhouse nursery, greenhouse air flow and exchange restrictions townhouses nursery greenhouses, vegetable plants in tall, lush foliage, a change in the concentration of carbon dioxide in the air shed very intense. Before sunrise the morning due to the release of crop and soil respiration, carbon dioxide concentration is higher than that outside the greenhouse concentrations 2-3 times (about 330PPM); 8-9 while later, with the leaf photosynthesis increases, can be reduced to below 100PPM. Townhouse nursery greenhouses _ Communications Technology (certified) how much money _ Wuhan townhouses nursery greenhouses provided by Anyang City Communications Technology Co., Anyang City Communications Technology Co., Ltd. (www.aytlkj.com) (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. You can also access (www.aytlkj.com/supply_details_39778110.html), for more information about the company.