Colored gems are graded by color, and tourmalines are no exception. The most demanding colors in the tourmaline market are pink, bright red and green, with red and green tourmalines being the most common and popular. However, only moderately medium and vivid colors are the best. If the color is too dark or too light, the value will be greatly reduced. What color of tourmaline is more valuable? Red tourmaline Red tourmaline is the highest value of tourmaline, the color is purple, red rose is the best, such as the color depth is also called "double peach", the color is called "single peach red" or "baby face". The quality is like ruby; the second is pink, light red tourmaline. Green tourmaline Green tourmaline, green tourmaline with emerald as the best, in Europe and Brazil and other countries, green tourmaline was mistaken for emerald to see its preciousness, followed by yellow green green tourmaline. Blue tourmaline The blue color of the blue tourmaline is very rare, the common one is dark blue or green blue, and the blue tourmaline is like the sapphire. Watermelon tourmaline Watermelon tourmaline is because the tourmaline presents a complex of two colors or multiple dyes. This type of tourmaline is very rare and is also of high value in tourmalines. Huang Bizhen Yellow tourmaline, pure yellow or orange tourmaline is difficult to see, different shades of yellow or brown are very popular, but the yellow tourmaline is pure yellow tourmaline as the top grade, but rarely seen on the market. 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)
Tourmaline's three-six-ninth, etc.