Tightness. We should keep greenhouses tightness, only tightness reached in order to play the role of insulation, insulation covering material previously used straw thatch, Po seats, etc., although it can play the role of insulation, but the drawback is being bulky insulation purposes, Volume put a lot of work, effort, after being soaked in the rain and snow insulation was introduced, only increasing the weight, but also make the insulation performance degradation, and pollution of the film, easily reduce the transmission rate. The greenhouse insulation is a lightweight, waterproof, anti-aging, insulation, and other far-infrared reflectance function, long life, good insulation effect, under the same conditions than the grass thatch covering temperature can be increased by 10 degrees for easy storage collection, the product suitable for greenhouse, Greenhouse, eco-restaurant, long-distance trucks, greenhouses and other insulation cover, grass thatch and paper is the best alternative. There are many non-woven classification, today Xiaobian to introduce simple non-woven according to the classification of the production process: First, the heat sealing nonwoven thermal bonded non-woven fibrous or powder refers to join in on the web hot-melt adhesive reinforcement material is industrial insulation, fiber network and then melted by heating cooling reinforcement into cloth. Second, non-woven non-woven needle acupuncture is a dry non-woven, non-woven fabric is the use of acupuncture needle puncture effect, fluffy fiber mesh reinforcement into cloth. Third, airlaid nonwoven airlaid nonwoven fabrics can be called airlaid, airlaid nonwovens. It is the use of airlaid pulp fiber technology will loosen the fibers into a single state, and then the fiber agglutination method using flow on a net curtain, fiber network and then reinforcement into cloth. Four, wet nonwoven wet nonwoven fabric is placed in an aqueous medium fiber material opening into a single fiber, different fiber raw materials are mixed while insulation was, into a fiber pulp suspension, the pulp suspension fed to the laying mechanism , the fibers in the wet state into a reinforcing web and then into cloth. Supply of insulation was widely St. agricultural machinery _ _ Tibet insulation is provided by Shouguang City, Canton St. Agricultural Machinery Limited. Shouguang City, Canton St. Agricultural Machinery Co., Ltd. (www.sdguangsheng.com) Shandong Weifang, a leader in agricultural machinery, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Canton St. agricultural machinery leadership with the staff warmly welcome all inquiries negotiations to create a wide St. agricultural machinery a better future.