what are e-cigarettes_why is my disposable vape making a buzzing noise

Sweetener-Free E-Liquids: Formulated without added sweeteners like sucralose. While slightly less sweet on the palate, they significantly extend coil life as sweeteners are a primary cause of coil gunk and caramelization. They appeal to users tired of frequently replacing coils.E-Liquid Formulations & Bottling Beyond hardware, this critical category encompasses the manufacturing of a vast spectrum of nicotine e-liquids. Services include custom flavor development, nicotine salt and freebase nicotine formulations in various strengths (e.g., 0mg, 3mg, 5mg, 50mg), professional bottling in multiple sizes (30ml, 60ml, 120ml), and custom brand labeling. This allows distributors to offer a complete, cohesive product line under their own brand, from the device to the consumable liquid.https://cbu01.alicdn.com/img/ibank/2017/095/639/3964936590_1225179706.220x220xz.jpgLimited Edition Box Mods: High-end, often hand-finished mods produced in small quantities. They may use premium materials like stabilized wood, forged carbon fiber, or engraved brass. These are collector's items that represent the pinnacle of vaping as a hobby and craftsmanship.Fruit Flavors: The most extensive category. Ranges from single-note flavors (e.g., Strawberry) to complex, multi-layered blends (e.g., Mango Peach Pineapple). Requires skilled flavor chemists to create authentic, non-candy-like fruit profiles.