1 thought on “How to use the QR code to scan the authenticity of the QR code”

  1. Gold QR code should be WeChat's public platform QR code. You should open your WeChat version 8.15.0 directly to scan the code to identify.
    WeChat Apple 12, iOS14, WeChat version 8.0.13
    -scan the QR code on the two -dimensional code on the mobile phone, you can immediately find out the 10,000 -foot gold product Detect information.
    The check number is on the "National Gold Diamond Product Quality Supervision and Inspection Center" website. Enter the detection number on the 10,000 -foot gold label to query the product information.
    The expansion information:
    (1) See color: the higher the purity of the gold jewelry, the deeper the color. If there is no gold medal, you can determine the general color according to the following color (based on green gold. The so-called green gold contains only silver ingredients in gold); dark red yellow color is more than 95 %, light red yellow 90-95 % The pale yellow is 80-85 %, the cyan is 65-70 %, and the white light is only 50--60 % white light. The slightly yellow and white are less than 50 %. Generally, Qiqing, Eight Huang, and Jiu Chi can be used as a reference.
    (2) Type weight: The proportion of gold is 19.32, which is more important than metal such as silver, copper, lead, zinc, aluminum. The volume of gold is more than 40 % heavier than the silver, 1.2 times heavier than copper, and 6.1 times heavier than aluminum. The gold jewelry should have a feeling of sinking in the hand, and the fake gold jewelry feels lightly. This method does not apply to the gold jewelry inlaid with gems
    (3) Look at the hardness: pure gold is soft and low, and the nails can be used to draw light marks. Low softness, the more copper, the harder, the more the bending method can test the hardness, the pure gold is soft, it is easy to bend, the lower the purity, and the less likely to bend.
    (4) Listening to the sound: Throwing the real gold with more than 99 % to throw it on the hard ground, it will make a tap sound, there is no rhyme or elasticity. The fake or low golden sound is crispy but no dullness. Generally, the sound of "Dangdang" is emitted, and there are surplus sounds.
    (5) Seeing the mark: Domestic gold jewelry is all prepared according to international standards, and the killing records, such as "24K" indicate "foot red" or "foot gold"; 18K gold, "18K", indicate "18K" Words, those who are lower than LOK, can not play the K -printed number according to regulations. At present, illegal elements are commonly used to manufacture fake cards and imitation stamps in the society. They use rare gold, Asian gold, and even brass to impersonate real gold. Therefore, the identification of gold jewelry must be comprehensively determined according to the sample to determine the true and false and the quality of the real.

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