... consumption 3 Easy Operation and High efficiency Shelter Mat Roller Description: 1. Applicable for rolling-over and covering ... Operation and High efficiency. Application: JR Series Shelter Mat Roller is widely used in farm, grazing land, greenhouse etc, ... assistant rolling work on other shelters. Specifications: TypeStraw Mattress Roller, Greenhouse EquipmentBrand NameSD SUNCOModel NumberJR-1, JR-2, JR ...