可与电动送风(PAPR)或供气式(SA)呼吸防护产品配套使用，满足不同防护环境的需求 Can also be used with PAPR or supplied air respirators to fit different using environments. ·特有口鼻罩最小空气“死腔”设计，避免呼出的二氧化碳被再次吸入，降低使用者的工作疲劳度 

With specially designed oral/nasal cup to lessen”dead space”，avoid re-breathing in of exhaled CO2 and reduce the working fatigue of wearers. 
·独有的呼气阀设计，保证呼出气体最大程度被排出面罩之外，提高使用者的佩戴舒适感 
Specially designed exhalation valve can vent the gases out from the mask to the most so that the user can experience more wearing comfort 
·特有的面部曲线贴合设计，360度密封，可满足不同脸型佩戴需求。并且按人体工程学设计理念，不同部位密封圈厚度不一，更好地满足鼻部、下颌部及脸部对于贴合性的不同要求 
Unique airtight curve of the inner mask offers 360°facial seal to fit various face shapes. It also has different mask thickness on different position based on the ideas of ergonomics design to ensure great fitness on the nose, chin and face. 
·头部固定式设计及可调节式头带保证佩戴定位准确，不受作业者活动影响，消除佩戴不适感 
The head harness is positioned on the headand and also adjustable which can make the donning easy and comfortable regardless of any movements of the user. 
·整体下探式外形，避免对视线的影响，与防护眼镜也能够良好适配 
The shape is downwards designed in order to avoid any effects on the vision and also has a good compatibility with safety eyewear. 
·5500系列为一款经济款半面罩。它保留了7700系列的绝大部分性能，由TPE热塑弹性体橡胶制成，舒适经济。在防护性能不受影响的前提下，最大程度地为客户节约使用成本。 
5500 is the economic half mask. It keeps most of the features of 7700 and is made of TPE material which reduces the using costs of users to the most without acrificing any protection ability.

*可选配霍尼韦尔N系列的滤盒

产品编号	产品说明	尺码	标准	类别	包装
550030L	经济款	大号	NIOSH	TPE 材料	12只/箱
550030M	经济款	中号	NIOSH	TPE 材料	12只/箱
550030S	经济款	小号	NIOSH	TPE 材料	12只/箱