... agriculture 1. Structure Specification:The main structure is consisted by Main Column GM01, Side Column GM02, Inside Colum ... : (1) The roof and the side are covered by 150micron film, 3 year warranty and 5 year life. ... (2) Film is fixed by special groove and plastic coated wire. (3) Insect ... (1) Film Roll-Up system on 2 sides by manual controller, 2units on 2 sides.(2)Film Roll-up ...