The framework of ce greenhouse is usually built with rust - proof iron bars and sealed with materials such as polyethylene film or polycarbonate sheet . a ce greenhouse is usually equipped with automatic environmental control system and irrigation system 环控温室通常以防锈铁料作桩柱及支架、再用透明胶膜或胶板等物料密封，并装设自动化的环控系统及灌溉系统。
