... 5KW,Weight:33~455KG,380V/440V,50Hz/60Hz,CBZ series explosion-proof axial centrifugal fans for marine use are designed and ... GB 11799-89(Marine Explosion-proof Axial Centrifugal Fans), and general description and explosion-proof electrical equipment d of GB3836-83 Electrical apparatus for explosive atom ... Licang District,Qingdao,Shandong province,ChinaQINGDAO CHUNHAO AIR BLOWER EQUIPMENT CO.,LTD