How we collect, use and protect your information.
We collect information you provide directly when placing an order, creating an account, or contacting us: your name, email address, WhatsApp number, shipping address and order details. We also collect basic technical data (browser type, IP address, pages visited) to operate and improve the website.
Your information is used to process and fulfil orders, provide customer support, send order updates and shipping notifications, and — only with your consent — send promotional offers. We never sell your personal information to third parties.
Payment processing is handled by our payment providers. We do not store full credit card numbers on our servers. Where payment is arranged manually (bank transfer, Zelle, Venmo, WhatsApp), the details you provide are used solely to complete your transaction.
We use cookies and browser local storage for essential functions: remembering your cart, your age confirmation, and your login session. You may clear these at any time in your browser settings.
We share information only with service providers essential to fulfilling your order (shipping carriers, payment processors, email delivery). These providers are contractually obligated to protect your data.
You may request access to, correction of, or deletion of your personal data at any time by contacting nadh_biotechnology@163.com. We respond to all requests within 30 days.
Questions about this policy? Email nadh_biotechnology@163.com or message us on WhatsApp.
Last updated: 2026