first of all, look at the appearance. There is a circular concave print on the top and bottom of the joint of the genuine Zippo lighter. It is really difficult for the two circular marks of the pressing leaves on the casing to be exactly the same on the imitation machine, which can also be used as a basis for judgment. Zippo has a year of manufacture at the bottom. From 1932 to 1956, it was written in block letters; Italic writing was used in 1957-1976; Since 1977, it has used a trademark shape with a flame pattern. In addition, since 1957, all the bases of ZIPPO lighters have been engraved with marks representing the year of manufacture, which is convenient for collectors to identify. Prior to this, products can only be judged by S number or design type. There are four kinds of marks representing the year of manufacture, namely [] (since 1957), [|] (from 1966 to 1973), [/] (from 1974 to 1981) and [] (from 1982 to 1986). Each mark is used for 8 years. There are at most eight of these marks, which are engraved on the left and right sides of the ZIPPO trademark (that is, there are at most four marks each). And adopt the method of decreasing year by year, leaving at least one. Since 1986, in addition to the year, the month mark has been added. On the right side of the trademark, Roman numerals indicate the year of manufacture (II stands for 86 years, III stands for 87 years, and IV stands for 88 years); The English letters on the left represent the manufacturing month (A stands for January, B stands for February, and C stands for March). Among the above features, fake Zippo lighters are generally absent or incomplete, and the printing is also very rough. Performance, quality and appearance can't be compared with real Zippo. In addition, we can also compare the actual use of true and false Zippo. First: the real Zippo is generally lighter than the counterfeit, because the fake Zippo lighter is made of steel or iron, not the special material for Zippo; Some unscrupulous manufacturers have increased the thickness in pursuit of hard shell. Second: Look at the flame and heat resistance. When the Zippo imitation burns, it emits smoke, and the flame flickers on and off, and the whole fuselage burns in less than 4 minutes. The real Zippo lighter will not ignite the fuselage until the fuel runs out. This is because the fake Zippo just-made cover is too thick and the heat dissipation effect is poor; The oil storage cotton core in the machine is of poor quality and easy to leak oil. Third: windproof ability. Put the true and false Zippo at a distance of 4 cm from the electric fan, and turn the electric fan to the maximum wind power, but it still can't blow out the flame of the real Zippo lighter. The fake Zippo lighter was blown out when the electric fan only turned on the minimum wind. This is because the windproof wall of the real Zippo lighter is high; The design of vent hole is scientific and reasonable; Special wick absorbs oil well.

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