1. Electirc rolling door functions: 　Theft prevention, fire prevention and smoke prevention. 2. Installation location: 　Factory, shop, residence, school, warehouse and carport. 3. General weight calculation for electric rolling door: 　Based on actural height and width, appropriate material can be 　ordered and manufactured. 4. Selection of electric rolling door and door panel: 　Door panel model number, door panel thickness, wind 　resistance and pressure resistance, lighting and ventilation 　functions. 5. Electric rolling door options: 　Input power: single phase or three phase; voltage:110V,220V or 　380V. For operation method, depending on door weight, select 　matching remote control or manual control type. 6. Attached equipment: 　Includes hazard prevention device, smoke detector, sensor, 　ultra-red ray and pressure prevention safety switch etc. 7. Maintenance and operation: 　When the electric rolling door is rolling ups and downs, do not 　place sundry articles under the rolling door or stand under the 　running track of the rolling door so as to avoid injur. During 　norma utilization of electric rolling door, conduct maintenance at 　least 1~2 times per year.