What grade does Xiaoye e-cigarette belong to?

Second line. E-cigarette is an electronic product that imitates cigarettes and has the same appearance, smoke, taste and feeling as cigarettes. It is an atomizer driven by rechargeable lithium polymer battery. Xiaoye is not a domestic first-line brand but a second-line product, and Xiaoye is not well known. First-line brands are mainly well-known brands, and consumers are more than 90% familiar with them. Among them, first-line brands have the characteristics of first-class products, first-class prices, first-class stores, first-class consumers, first-class advertisements and first-class services.