Shell engine oil is true and false. How can Shell engine oil be true and false?

how does shell oil verify the authenticity? The following are the methods that Bian Xiao sorted out for everyone: 1. When light turns into ink, the color will change with different viewing angles; 2. The word (authentic) will disappear when dropped, and will recover when the water is dry; 3. Miniature text: the naked eye looks like a line, and under the magnifying glass, you can see that these lines are miniature "SHELL”；"; The formation of words; 4. Variable bar code, with a unique bar code on each sub-label; 5. laser holographic film, after the label is torn, you can look at the back of the label from different angles, and the color is red and flashing; 6. Digital anti-counterfeiting. Tear off the surface of the label to show that each label has a unique anti-counterfeiting number. Consumers can call 4885 or send a message to 166958821885, and enter the number according to the prompt to immediately verify the authenticity of the product; 7. Colorless ultraviolet fluorescence. Under the irradiation of ultraviolet light, the white adhesive layer presents the implied red word "shell"; 8. A set of numbers seen on the surface of the label should correspond to a set of numbers inside after tearing. This is just basic anti-counterfeiting. Now, Huang Xili, who is highly imitated, can make a phone call. In order to truly identify the authenticity of Shell Oil, other methods must be combined. Finally, you must buy oil in a regular store when you buy it, so that you can feel more at ease.