HB 3772 establishes an e-cigarette directory maintained by the Texas Comptroller that lists approved e-cigarette manufacturers and products authorized for sale in the state. The bill mandates that manufacturers obtain certification and pay a $2,500 fee per product. It prohibits the sale of e-cigarettes not listed in the directory and establishes penalties, including product seizure, destruction, and fines. The bill aims to regulate nicotine-containing e-cigarettes while allowing the state to track products under federal compliance standards​.