北京塑料研究所完成的国家“八五”重点科技攻关成果--多层复合保温高透光棚膜，通过百余亩农田应用考核验证，已被国家科委批准列入《国家级科技成果重点推广计划》。这种新型棚膜有三层结构，表层为耐老化功能层，内层为无露滴功能层，中间层为保温高透光功能层，三层结构采用 Beijing Institute of Plastics completed the national “85” key scientific and technological achievements - multi-layer composite insulation high light-translucent film, through more than 100 acres of farmland appraisal verification, has been approved by the State Science and Technology included in the “National Science and Technology Outcome focused promotion plan. ” This new type of greenhouse film has a three-layer structure, the surface layer is anti-aging function, the inner layer is dew-free functional layer, the middle layer is a high thermal insulation functional layer, three-layer structure