With the extension of people’s health consciousness and the worldwide campaigns for a blanket smoking ban, E-cigarettes first appeared in the public arena. The basic concept of E-cigarettes is that they are smokeless, non-tobacco cigarettes, and this was proposed by Herbert Gilbert in 1963, and patented in 1965, but did not enter the market . In 2003, a Chinese pharmacist Han Li applied for and obtained a patent for “a non-flammable electronic atomizing cigarette” . In 2004, the Ruyan Company of China began to develop and sell E-cigarettes. E-cigarettes gradually became commercially available. In 2007, the international patent of E-cigarettes was obtained . Since then, the E-cigarettes have continued to develop, spreading from China to Europe, America, Japan and other countries. By 2014, E-cigarettes were being sold in more than 60 countries and regions all over the world, and were being sought after by more and more consumers of different ages. China has become the main production place of E-cigarettes, and about 90% of E-cigarettes in the world are produced in Shenzhen . In recent years, in response to the different demands of E-cigarette consumers, along with the broad market requirements, E-cigarettes have developed rapidly. Different electronic products have been put on the market, and the replacement cycle of similar products is very short.