The purchase of diamonds is learned. Blindly choosing may make you both money and money. Here are a few tips for buying diamond jewelry. Five look A look at the business: must choose a reliable jeweler to buy, the so-called reliable jeweler, refers to the business of jewelry business for many years, has good reputation, has a fixed store, in the next five or ten years can be Find his shop. Second look at the imprint: the diamond ring sold by regular jewelers, the inner ring has a mark. Third look appearance: the surface is smooth, polished, no obvious defects such as sand holes. Four look inlay: With the professional gadgets provided by the merchant, such as 10 times magnifying glass, carefully check the symmetry and regularity of the inlaid claws and the mosaic edges. Five-see certificate: Refer to the diamond identification certificate to compare the diamond 4C (diamond weight, cut, color, clarity) level. Three do not buy The source is unknown and does not buy; the tourist location does not buy; no real thing does not buy. Two comparisons A comparison price: the same price is better than diamonds, than the setting; the same diamond is more than work, than the price. 4C determines the price and quality of the diamond. Among them, the size of the diamond has the greatest impact on price, followed by cut, color and clarity. Second, after-sales: After understanding the reputation of the merchant, you can consider purchasing after the sale. After purchase, you need to obtain the diamond identification certificate and quality guarantee. At the same time, after wearing the diamond for a period of time, you need to carry out cleaning, polishing, maintenance and other work. The perfect after-sales service is necessary. Children Kn95 Face Masks 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)
February 01, 2021