国产精品日本一区二区在线播放,永久免费AV无码网站大全,极品无码av国模在线观看,国产精品一区二区含羞草

Shanghai zhongshang filter material co., ltd

Qingpu, Shanghai, was born in 2008. It is an emerging enterprise with a complete set of production lines for primary, medium and high efficiency filters. From the very beginning, Zhongshang filter materials attached great importance to the concept of "evolution first and internationalization" as the guidance; based on the outstanding quality, it continuously explored, developed and worked hard. Our main business scope: primary, medium efficiency filter cotton, seamless welding filter bag G3, G4, F5, F6, F7, F8 coconut brown filter screen, ceiling filter cotton, paint fog felt for...