这款防毒面具可与电动送风(PAPR)或供气式(SA)呼吸防护产品配套组合成电动送风呼吸器使用，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.

诺斯770030S防毒面具特有口鼻罩小空气“死腔”设计，避免呼出的CO2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.

与3M防毒面具一样配置独有的呼气阀设计，保证呼出气体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

诺斯770030S防毒面具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.

诺斯770030S防毒面具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.

7700 系列为 硅胶设计。它享誉全球市场超过20年，而且防毒面具价格处于市场中等水平，是目前市场上将舒适、贴合、安全性结合的一款防护用品。
7700 series is made of silicone and is one the most outstanding product in the market for over 20 years which features comfort, fitness and safety together.

可选配霍尼韦尔N系列的滤盒