E juice

E-liquid (also known as E-juice) is the core component that generates the smoke in electronic cigarettes. The ingredients, types and choices of e-liquid are all very important. 
?? The core components of e-liquid
All e-liquids are mainly composed of the following four basic components: 
Propylene glycol (PG): A common food and drug additive. It is mainly responsible for carrying flavors and providing a "throat-stimulating" sensation. 
Vegetable glycerin (VG): Also a common food additive, it is more viscous than PG and has a slightly sweet taste. Its main function is to produce a large amount of smoke. 
Nicotine (Nicotine): Optional ingredient, its function is to provide a sense of satisfaction. Its concentration is expressed in mg/ml. Common concentrations include 0mg (no nicotine), 3mg, 6mg, etc. 
Food-grade flavorings (Flavorings): The key components that determine the flavor of the e-liquid. 
The PG/VG ratio is crucial: this ratio directly affects your experience. 
High PG: Strong throat hit, less smoke, clearer flavor. 
High VG: Weak throat hit, thick smoke, smoother taste. 
50/50: The most balanced option, suitable for most beginners and daily use. 
?? Main types of e-liquid
Based on the form of nicotine and packaging method, e-liquid mainly consists of the following categories: 
Nic Salt: It has become very popular in recent years, especially in disposable electronic cigarettes. It uses a special process to make high-concentration nicotine extremely smooth and with a weak throat hit. Nicotine is absorbed quickly, making it suitable for helping smokers quit. It is usually used in small-power refillable or Pod systems, with common concentrations of 20mg/ml or 10mg/ml. There are a wide variety of flavor options. 
Freebase: This is the most traditional form of nicotine, with a strong throat hit. It is suitable for heavy smokers who enjoy a strong throat sensation, as well as for those who prefer to adjust the e-liquid themselves. It is commonly found in high-power vaporizers, and the common concentrations available on the market are 3mg/ml or 6mg/ml. 
Shortfill (Refill Bottle): This is the most cost-effective option, especially suitable for users of vaporizers. Shortfill refers to a large bottle (usually 50ml or 100ml) of 0-nicotine e-liquid. There will be space inside the bottle, allowing you to add a bottle of "nicotine base solution" (Nic Shot) yourself to turn it into e-liquid with nicotine. Its unit cost is much lower than the previous two options, and the flavor options are extremely diverse. 
?? Flavor and Regulations: An Important Reminder
In the Chinese mainland, according to the mandatory national standard GB 41700-2022 "Electronic Cigarettes", as of October 1, 2022, all legally sold e-liquids must have tobacco flavor as the main flavor. Flavors such as fruits, beverages, and candies are strictly prohibited. 
The national standard allows for the addition of supplementary flavors to tobacco, such as nutty, cocoa, or tea flavors, but these flavors must be weaker than the tobacco flavor and should not overshadow it. 
?? Price Reference
Vape oil: The price of vape oil from non-official channels ranges from 45 yuan to 150 yuan. 
Vape cartridges: Vape cartridges from authorized channels (3-pack) cost approximately between 88 yuan and 146 yuan. 
?? Purchase Channels
Given the strict regulations in the Chinese mainland, the purchase channels are very limited: 
Offline physical stores: Physical stores that hold a tobacco retail license are currently the main legal purchasing channels. 
Online platform: It is impossible to purchase directly through mainstream e-commerce platforms. Even if the product is found through obscure keywords such as "electronic spray", it still comes from an unofficial source and the quality and origin of the product cannot be guaranteed, posing extremely high risks. 
Other channels: The "fruit-flavored" products that are sold through private domain channels such as WeChat merchants are all illegal products. 
?? Summary and Selection Suggestions
To help you make a quick decision, here is a simple comparison: 
Characteristics Nicotine Salt (Nic Salt) Freebase Shortfill
Nicotine Form Nicotine Salt - Absorbs quickly Freebase - Absorbs slowly Requires adding nicotine yourself
Throat Hit Very smooth Strong Depends on the type of nicotine you add
Applicable Devices Low-power Pod System High-power Vaporizer High-power Vaporizer
Cost-Performance Medium (10ml Bottle) Medium (10ml Bottle) Maximum (Large Bottle)
Target Audience New smokers, those seeking a smooth taste Heavy smokers, those seeking a throat hit Advanced users seeking cost-effectiveness
In summary, if you are a novice or have just transitioned from cigarettes electronic cigarettes, Nicotine Salt is usually the most natural choice. If you pursue the highest性价比 and large puff volume, and are using an oilable vaporizer device, then Shortfill is a more economical option. 
Which device are you currently using? Is it a reloadable small vaporizer or a large oil-injecting smoke device? Please tell me the type of your device, and I can recommend a more suitable type of e-liquid for you~