The design of THDF10-I/THDF15-I air breathing device is to complied with regulation of International Union of Marine Insurance, which became a compellent requirement. The product passed the certification of CCS. It is constructed by air compressed bottle, pressure gauge, pressure buffer, cover and mask. A unit can provide fluent air 10~15 minutes for a man to escape the environment with noxious gas, poisonous smoking, or anoxic atmosphere. The pressure in the bottle can be read by pressure gauge, outside gas can not get into the cover due to inside pressure is higher, and the size is small for easy removed. 

The operation is easy.