Fordyce Co. to explore together with you --- normally closed fire doors "normally open" fire order immediate rectification. Normally closed fire door is fire compartmentation of an activity, with fire, and smoke, blocking high temperature and other functions. However, fire inspectors found during an inspection, the property will not only normally closed fire door closers rod removed, but the main isolating valve fully open security doors how to sell in case of fire can not play its due effectiveness, the harm caused incalculable. Zhejiang Industry and Trade Fordyce teach you purchase method of stainless steel security door security level. Safety factor of stainless steel security door into A, B, C three levels, the highest level security performance C, B second, A-level minimum coefficient. Currently marketed in the stainless steel security door A-class security doors, mostly preferred, common for general family households. Requirements A grade stainless steel security door security doors to how much money the whole copper, flat open fully enclosed, in the general machinery, hand tools and portable electrical tools of coordination, its weakest link also resistant to non-normal opening time The net time is greater than or equal to 15 minutes. Door price _ _ Fordyce, industry and trade enterprises assure the security door Henan provided by Zhejiang Industry and Trade Co. Fordyce. Door price _ _ Fordyce, industry and trade enterprises assure the security door, Henan, Zhejiang Fordyce Ltd. (www.cngusite.com) this year introduced a new upgrade, the above picture is for reference only, please call or pictures on this page contact telephone number, to obtain the latest information, contact: Mr. Shen.