SPECIFICATIONS

Brand Name: 3M

Certification: NONE

Choice: yes

High-concerned chemical: None

Model Number: 312-1201

Origin: Mainland China

semi_Choice: yes

Note:

Because 3M factory has stopped supplying earplugs model 312-1201, the existing product is 3M 391-1001 (packaged in plastic barrel), and the only difference between these two models is the packaging. The material, size, and function are exactly the same.

Purchase precautions:

The quantity in barrels is 500 pairs, and our sales quantities are 10 pair, 20 pair, 30 pair, 50pair, 100 pair, packaged in transparent bags.

When you choose to purchase, it indicates that you have accepted the transparent bag packaging

3M 391-1001 earplugs use:

Improve sleep, concentration, and protection of hearing. It is a good helper for you to avoid noise interference in your home, bedroom, self-study classroom, travel by plane, factory, construction site, downtown area, etc. It is a good partner for your healthy new life.

3M 391-1001 earplug effect:

The noise reduction value (NRR) is 29db. It has a cylindrical design. It is directly inserted into the ear after being squeezed and reduced. The surface is smooth and treated with anti-fouling treatment. It is hygienic, safe, soft and comfortable, and has good sound insulation effec