portable stored-pressure powder series extinguishers are effective extinguishing appliances,in which extinguishing gaent sodium bicarbonate and ammonium phosphate powder together with the driveng gas -nitrogen are filled in a full-sealed container.during application ,nitrogen drives to jetting powder for extinguishing ,which is fast and effective in extinguishing,light in weight ,convenient and simple in operation,safe and reliable. sophya hangzhou tianshun fire-fighting equipment co.,ltd web:http://www.tianshunxf.com skype id: sophyaxia yahoo id : sophyaxia e-mail:tianshunhz@gmail.com msn:extinguisher88@hotamil.com tel:+86-0571-86336540 fax:+86-0571-86391369 address:yunhui.renhe town.yuhang district.hangzhou portable stored-pressure powder series extinguishers,transportable powder series extinguishers,extinguisher box,hydrant box,suspension type stainless steel series extinguishers, suspension type powder series extinguishers,autimatic powder extinguisher ,powder extinguisher