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Do you suffer from the effects of allergies and air pollution? It not only affects the respiratory tract but also increases the risk of cardiovascular disease and cancer.!

:dc face masks use the most state-of-the-art technology to provide high-filtration face masks that are also highly breathable.

Compare the size of particles in air pollution to our nanofibre membrane and you'll find they don't stand a chance: According to 0.075μm particle size testing by Taiwan TTRI Lab, it has a 99% filtration rate!

daciantech logoMask Has Passed Multiple Tests
Test Item Test By
PM2.5 Mask Taiwan CNS 15980 A Grade Protection
Korea KF94 Korea KF94 Certificated
China GB/T 32610 2016 Test by China A Grade Protection
China KN95 Test by China KN95 certificated
Heavy Metals in Ambient PM2.5 Test by NCTU EV > 95%
PM2.5 in Ambient Test by NCTU EV > 99%
PM0.075 Taiwan TTRI > 99%
Bacterial Filtration (BFE) Taiwan TTRI > 99%
Blood Penetraction 120mmHg Taiwan TTRI Passed
Virus Filtration (VFE) US Nelson Lab > 99%
DOP Filtration US Nelson Lab > 98%
PM0.075 Japan KAKEN Lab > 99%
Bacterial Filtration (BFE) Japan KAKEN Lab > 99%
Blood Penatraction 160mmHg Japan KAKEN Lab Passed


  • Efficient filtration, breathable and comfort.
  • Blocking smoke fumes effectively.
  • Blocking germs and virus effectively.
  • Special filter materials !

    daciantech logoNano-Tech Membrane

    General mask use meltblown as filter layer, meltblown use Static electricity to absorb pollution particles. However Static electricity don’t work in moisture condition, that when we start breath, the filter rate will start decade.

    :dc mask use membrane as filter later, it work as physical filter. The filtration rate wouldn’t decade after using. And it would be washable. Membrane with 85% to 90% effective porosity, having large area for air exchange to provide both high protection and comfort .

    PTFE 效果圖

    Quality 100% Committed

    Each pack of mask has it’s individual serial number to track the production history. All films are tested by independent certificated Lab to ensure the quality. You are able to check production history and test report online.

    Wear a mask can also be very stylish.

    Better Protection For Better life.

    I am roaming in the city。



    Oil Smog resistance , suitable for riding motorcycle.

    :dc Microparticle Stopper Mask for Adult

    Mask could be one of your accessories。


    3D shape with stylish design, keep your make up perfect.

    :dc Microparticle Stopper Mask for Adult

    Children’s must have item


    Blocking germs and virus effectively, best choice for Kids.

    Children’s must have item

    daciantech logoMicroparticle Stopper Mask

    Protective face mask. Oil-resistant stain masks. Most comfortable, rest assured

    Cleaning method

    Face masks can be washed by hand in tap water, 75% / 95% alcohol or diluted detergent. It is recommended to spray SIM Water on the face mask in the case of flu or virus prevention.



    Prevent the inhalation of
    automobile emissions

    Oily Particle Protection

    Do you use N95 face masks correctly? N95 face mask has 95% filteration rate of non-oily particle, which means that N95 face masks may not be able to effectively prevent oily particles emitted by automobiles.

    daciantech logo mask passed 98% DOP test carried out by Nelson Lab in the US. It would help you to block vehicle exhaust

    Kitchen Extractor Hood and Your Lung

    Don't treat your lung as a kitchen ventilator. Wear a good face mask capable of filtering oily particles to protect your lung when cooking.



    Blocking cooking fumes. Oil resistant face mask is the best choice for protect your lung.


    Prevent the inhalation of
    industrial emissions

    Industrial Emissions

    The environment is full of all kinds of pollutants, including dust, smog, germs, viruses and chemical toxic substnaces, and a good face mask shall provide complete and comprehensive protection.



    Blocking germs, pollen and other sources of allergy, soothing runny nose sneezing and other symptoms.


    daciantech logo mask has 99% filtration of
    3 μm germsl Filtration Test (BFE)

    Medical protection

    Health care professionals are at the risk of germs and blood contamination. dc masks are CNS 14755 and the United States norms ASTM F2101 norms qualified, with 99% filtration of germs and viruses. In addtion, dc masks passed the blood penetration ASTM F1862 norms test carried out by the TTRI as no blood penetration.

    daciantech logoMicroparticle Stopper Mask
    3D shap Face Mask 6pcs/Box
    Gray Mask with Gray earloop /
    Gray Mask with Yellow earloop /
    White Mask with White earloop.
    3D shap Face Mask 6pcs/Box
    Gray Mask with Yellow earloop /
    White Mask with Yellow earloop
    Adult White
    Flat Face Mask 20pcs/Box
    Child White
    Flat Face Mask 20pcs/Box

    Dacian Technology Material Co., Ltd.

    No 8, Lan 2438, JingGao Rd. Dajia Dist, Taichung City
    Tel: +886-4-26810387
    Fax: +886-4-26810176

    Q & A

    • 01. What different between medical mask and :dc mask?

      Medical mask only filter particle bigger then PM3, However the particle smaller then PM2.5 will effect our healthy. 
      dc mask would block PM0.075 for 99%, to provide you best protection.

    • 02. What different between N95 and :dc mask?

      N95 mask only  filter the “non-oil” particle

      However , the car exhaust, cooking smoke, industry emissions are all consider as oil particles. 

      :dc mask could filter oil particle for 98%, it work as P98 mask

      :dc mask also can filter Heavy Metals in Ambient upto 95%

    • 03. Does :dc Microparticle Stopper Mask has certify by international Certificate

      Yes, :dc 3D Mask has certify by varios national strandard 

      Taiwan : PM2.5 mask CNS 15980  A class (passed 8 major test items.) 

      China: GB/T 32610 A  grade PM 2.5 mask

      China: KN95 mask certificated 

      Korea KF94 mask certificated

      :dc mask also done many tests in USA, Japan, China and Taiwan NCTU Lab,  please refer  https://www.dctpro.com/en/test_reports.php for all our test reports.

    • 04. Mask is washable? How can I clean it?

      Flat masks may be washed for 1 to 2 times in water, 3D mask may be washed for 2 to 3 times.

      We wear mask to protect our self, therefore, the cleanse of the mask will be an important issue. We Suggest, clean the mask daily, and change new mask weekly.

      According to TTRI test, :dc Masks remain 99% effectiveness after being washed for 5 times by 95% alcohol or clean water.

    • 05. How to check the membrane condition ?

      Check the membrane against the light. It is damaged if the membrane shrinks and you see the edge

      If the membrane is intact, you will not see the edge

      If the membrane is damaged, please use a new mask


    • 06. How to clean masks? Need detergent?


      Please use clean water to clean the mask, If the mask is used in a heavily polluted environment, please use warm water (approximately 50°C) with mild washing-up detergent to clean the mask, and don’t twist the mask. 

      For flu disinfection, please clean the mask by gently rubbing it in 75% / 95% alcohol or SIM water. 

      How to wash the mask, please refer to  video  https://youtu.be/II2Z9RooILo

    • 07. Can :dc mask block cigarette smoke?

      The smell always combine “gas” and “Aerosol/ particles ”, for example, if we talk about cigarette second hand smoke, it consist smoke gas(gas) , tar and nicotine(particle).
      Smoke gas is to small to block it , and our mask is air breathable, that you still smell it.

      However, aerosol/ particles harmful to our health,  our mask can block the Aerosol particle ( tar and nicotine) .

      Our mask can remove 99% of particle and about 50% of VOC

    • 08. Does the mask's gray color made by active carbon?

      No. the gray color is NOT active carbon. it’s only for fashion color.

      It take time for active carbon to absorb the gas, that the gas need to stay in a very low airflow condition to ensure the gas absorption , otherwise the gas  wouldn't be able to absorb by acticve carbon.

      Howevre , when we breathing, the air flow is to strong for active carbon to absorb the smell right away. In addition, we have done many absorption tests in nation university lab by using corrct mask  test standard,   and we got same results for the mask with active carbon and without active carbon. 

    • 09. what different between :dc 3D mask and :dc Flat mask

      The main different between those 2 masks is  wear fitness 
      3D mask fit better then flate mask

    • 10. Which size fit me?

      3D Mask size :

      -Adult  L : 125 mm X 150 mm (open 180 mm)

      -Adult M : 115 mm X 140 mm (open 170 mm)

      -Kids S : 95 mm X 120 mm (open  150 mm)

      Flat mask size:

      -Adult 175mm x 90mm
      -Kids  145mm x 90mm 

    • 11. Does :dc Microparticle Stopper Mask fit every one’s face ?

      :dc Mask has consider ergonomics into our design, that :dc mask fit most of people ‘s face, however if you would like to enhance the fitness more, you could take our mask accessories set to enhance the fitness.

    • 12. What I can read from the QR code label?

      The QR code can show you quality and production tracking history of the masks contained in the package box. Each pack of the mask has a specific serial number for quality and production history tracking. All the films are tested and certificated by independent 3rd party to ensure the quality before they are made into masks. You can check the production history and test report online by scanning the QR code.