南京源头工厂生产船用百叶窗，碳钢/304/316不锈钢/铝合金材质，带风暴盖、水密风雨密款式，符合CB/T749国标，可出具CCS、BV船级社认证，适用于机舱、货船、游艇，支持非标尺寸定做，现货稳定供货。marine louver, ship ventilation louver, weathertight marine louver, watertight boat vent, steel marine louver, stainless steel marine vent louver, CCS approved louver, engine room louver, yacht ventilation shutter