door closer短语⁹⁶⁶⁷⁷⁺⁶ 基本例句 闭门器 The main body of MIngmen door closer series are casted with high- quality aluminum alloy of reasonable design. Its multi- speed adjusting function assures the ideal door closing. 名门闭门器系列产品，主体先用优质铝合金压力铸造，设计合理，多段速度调节功能保证达到理想的闭门效果。 meijia365