The first element of the jade bracelet identification, the luster of the jade bracelet. The luster of the jade bracelet is glass luster and the surface looks very bright. As long as it is not really a jade bracelet, it does not have a glass luster and a beautiful surface. The jade bracelet of the second product, the gloss of the surface of the bracelet is weak, not bright enough and feels like grease. The surface of the real jade bracelet is very reflective and the border is clear. False jade is not well reflective and the border outline is blurred. This is why many experts can use the "eyes of the fire" to see the true and false of the jade bracelet. If you buy the jade bracelet, you should look at the surface gloss, which is a major factor in the identification of jade bracelets. The second element of the jade bracelet identification, the color of the jade bracelet. The color of the true jade bracelet looks very natural, usually with a colored root, such as a green jade bracelet, often seeing its green root inside it. However, the fake jade bracelet does not have a color root. The color seems to be tiled on the surface of the jade bracelet. As long as the light is shining, the star will see the color fade. So in many cases, we can look at the color of the jade bracelet to wake up the jade bracelet identification. Children Kn95 Face Masks Children Kn95 Face Masks,Children Surgical Masks,Kn95 Folding Face Mask,Nonwoven Face Mask Suzhou Ruihan Automation Technology Co. LTD , https://www.ruihansz.com
Composite nanomaterials, PM2.5 purification efficiency up to 95%.
Mask filter is soft and skin-friendly, ensuring a comfortable and healthy breathing experience.
Features and Benefits:
Stretchy
Elastic strap makes it easy and comfortable to wear, won't crack and won't hurt your ears.
Application
Suitable for 4-10 years old children. This mouth mask is perfect for running, cycling, hiking or other outdoor activities, it's also suitable for daily use.
Breathable
making you breathe freely, really comfortable. protects you from dust, wind, pollution, smoke, etc.
Comfortable
The material chosen is high quality, which is soft and skin-friendly to wear. The masks protect you from dust, wind, pollution, smoke, etc.
What does this respirator protect against?
• Filters ≥95%
• Dust
• Water-based mist
• Fumes
• Concentration of contaminants up to 20 times WEL
How long does a disposable respirator last?
These respirators generally will last about 8 hours or when it becomes too difficult to breathe and are disposable when they no longer offer full protection.
What is the difference between KN95, N95 and FFP2 protection?
Different countries use different codes and numbers to name their Standard of the respiratory face mask. But their
Positive effection are all very similar.
N95 (United States NIOSH-42CFR84)
FFP2 (Europe EN 149-2001)
KN95 (China GB2626-2006)