Haiku RHZK Positive Pressure Air Breathing Apparatus is a self-contained open air respirator, which can prevent firefighters and rescue personnel from inhaling poisonous gases, smoke and harmful pollutants suspended in the air when they are engaged in fire-fighting or rescue operations. Hercules RHZK Positive Pressure Firefighting Air Breathing Apparatus can also be used in oxygen-deficient environments to prevent inhalation of toxic gases, thus enabling effective firefighting, rescue and relief and labour operations.

HYGU RHZK series products can be divided into: carbon fibre composite cylinders 3L, 4.7L, 6.8L, 6.8L*2, 9L, 12L according to cylinder type and volume.