タイトルまたは説明

FJJ series fireproof rolling door motor:Absorb domestic and foreign advanced type's advantages, strictly in accordance with the People's Republic of public safety industry standard designed and manufactured. Up and down journey will be controlled by position limit switch automatically, with precision positioning, stable operation; and anti-chain-break safety device of unique design, safe and reliable, widely used in all kinds of public places, evacuation routes and fire protection separation.