902 stands for material, 12 stands for 12 production, and the abbreviation of HK, (HongKong), is the Hong Kong brand of Zorro lighters, but there are very good factories in the mainland where domestic kerosene machines are comparable to ZIPPO.

Zhibao lighter

Zippo？ Zhibao (Chinese name) is a metal lighter produced by Zippo Company in the United States. Zippo's windproof technology can meet the demand of ignition at any time in any bad weather. Its fuel is a very stable petroleum extract, and the flame produced by its combustion is not only safe and reliable, but also extremely clean.

Axle weight does not mean the weight of the axle itself, but the ratio of the total weight of the vehicle to the number of axles, that is, the gravity (self-weight+load) added to the track by each pair of wheels of the vehicle. The axle load of vehicles shall be subject to the maximum allowable load of tracks and bridges. The maximum axle load of China Railway is 25 tons. That is to say, in order to pull more goods (such as heavy freight trains) on the same line, it is necessary to increase the number of axles of vehicles and adopt multi-axle vehicles to share the weight of each axle.