1. If you find that the filling time of each bottle in the same box is very different, or the printing part and printing method are different, it must be a fake.

2. The bottle cap joint of real EP is clean and tidy. There are even tensile burrs after unscrewing. The fake oil bottle cap is welded twice. Each breakpoint is different.

3. After the real EP cap is unscrewed, the ring must be left on the bottle mouth, which is not easy to take off. If unscrewed together, it is a fake.

4. It is very important that after the bottle cap of real EP is opened, as long as the weather is not as cold as Heilongjiang, the connection point of the first lap will definitely not break, and the connection strength of fake oil is often not so high. If it breaks in less than one turn, it is basically a fake.