Top-Airflow Tanks: Feature airflow intakes located at the top of the tank. This design is a significant innovation as it drastically reduces the chance of leakage. Air is channeled from the top, down past the coil, and up through the chimney. While it can slightly mute flavor compared to bottom airflow, it prioritizes convenience and reliability.

Dessert Flavors: Rich, sweet, and complex profiles that mimic baked goods, custards, and creams (e.g., Vanilla Custard, Banana Pudding, New York Cheesecake). These often require longer steeping times for the flavors to mature and blend properly.

Open System Replacement Coils: The core consumable within a refillable pod. These are small, self-contained units that house the coil wire and wicking material. They are replaceable, allowing users to keep the pod shell and just change the coil when flavor diminishes (e.g., Mesh 0.6ohm, Regular 1.2ohm).

Closed System Pod Kits: Feature a proprietary ecosystem where the rechargeable battery device is exclusively used with pre-filled, non-refillable pods sold by the same brand. This model guarantees consistent performance and flavor, simplifies the user experience (no refilling, no mess), and creates a powerful, recurring revenue stream through pod sales.

Instruction Manual Printing: The production of multi-language instruction manuals and safety guides. These are legally required in many markets and must include clear diagrams, usage instructions, warnings, and company contact information. They are often printed on low-cost, thin paper and folded inside the product box.