This website (https://www.aerotechau.com) is owned and operated by HK YU LING TRADE LIMITED (香港昱翎貿易有限公司), a body corporate duly registered in Hong Kong under Business Registration Certificate No. 79384782-000-12-25-3, with its registered office at FLAT 2401-16, 24/F, WING SHING IND BUILDING, 26 NG FONG STREET, SAN PO KONG, HONG KONG. These Terms of Service are governed by the laws of the Hong Kong Special Administrative Region, without prejudice to mandatory consumer protection rights in your delivery jurisdiction.

1. Scope of Goods (100% Electronic Hardware Only)

HK YU LING TRADE LIMITED retails exclusively solid-state 2.4MHz piezoelectric pure-water ultrasonic humidifiers and SAA-certified Gallium Nitride (GaN III) charging hardware. We do not sell, bundle, or distribute botanical extracts, fragrance concentrates, chemical consumables, or inhalation products of any kind.

2. Dual-Currency Display (USD $ / AUD $) & USD Settlement

For customer convenience, product prices on our storefront are displayed in both United States Dollars (USD / US$) and Australian Dollars (AUD / AU$) via our interactive header currency switcher. All Afterpay and payment gateway transactions are settled in USD (US$) with HK YU LING TRADE LIMITED as Merchant of Record.

3. Returns, Refunds & Warranty

All purchases are protected by our 30-Day Return & Refund Policy and our 12-Month Hardware Replacement Warranty.