:dc gram microparticles-narrow version of abrasive particle masks (purple mask + gray ear straps 12 pieces/box)

Why do I still feel uncomfortable in my chest after work even though I wear a mask? We were all staying in the factory and wearing masks, but when we got home, we found that there was still... Gray and black? It’s not that you don’t take care of yourself, it’s that the way you take care of yourself is not strong enough! Masks for industrial workers https://youtu.be/07VZVWV-ORw https://youtu.be/NLtHbVuTcJw * Gram particle narrow version PM2.5 anti-air pollution washable nano film mask * Narrow plane design, high tightness between cheeks, new three-dimensional space design * Breathing in three-dimensional space is smooth, no need to use mask support frame * Special cotton rope ear straps allow you to wear them for a long time at work, still comfortable and without any marks. * 95% oil fume proof, 99% dust proof, 100% suitable for your grinding and polishing work *High-efficiency filtration + breathable and comfortable + oil-proof and not afraid of moisture *Replaces general N95 masks, more breathable and comfortable *Lightweight and three-dimensional design, getting rid of heavy burden, allowing you to breathe freely even if you wear it all day long. * Eco-friendly and can be washed and reused. It is recommended to wash it every day and replace the mask with a new one every 3-4 days. One mask is worth 4 N95 masks. *Each box of masks has an independent ID card for quality control https://www.dctpro.com/img/fitted_flat_facemask-img-12.png Suitable for: 95% protection against kitchen fume particles: Suitable for kitchen workers, frying, grilling, and quick frying. 99% protection against grinding dust: Suitable for precision processing, carbon fiber and glass fiber processing, manicure, food seasoning processing, building decoration, construction engineering, grinding processing industry, wood processing factory 95% protection against chemical aerosols: suitable for gas stations, precision processing, beauty salons, motorcycle owners, paint decoration, and shoe industry Product specifications: 12 pieces per box color: Purple mask with yellow ear straps Purple mask gray ear straps The appreciation period is not a trial period, and the returned product must be unopened, in new condition, and fully packaged (maintain the integrity of the product, accessories, packaging, manufacturer's carton, and all accompanying documents or information). Mask products are personal hygiene products and have reasonable exceptions stipulated in Article 19 of the Consumer Protection Law. There is no 7-day hesitation period after opening, and returns and exchanges will not be accepted.