Privacy Policy

1. Introduction

Welcome to Mathematical Supplements. We respect your privacy and are committed to protecting the personal data you share with us. This Privacy Policy explains how we collect, use, and safeguard your information when you download our resources or place physical book orders.

2. Information We Collect

We collect information directly from you when you interact with our website. This includes:

• PDF Downloads: Email address.
• Hardcopy Orders: Full name, email address, mobile phone number, delivery address (street, unit, postal code), and optional delivery remarks.
• Feedback & Reviews: Name and any remarks or testimonials you choose to submit.

3. How We Use Your Information

We use the collected information for the following purposes:

• To send you the digital PDF version of the guidebook.
• To fulfill and ship physical book allocations to your delivery address.
• To contact you via phone or email if verification is required for PayNow payments or delivery updates.
• To improve our guidebook content and publish feedback reviews (with your consent).

4. Data Processing and Storage

Your submissions are securely logged and processed via Google Apps Script and stored in a private Google Sheet. We do not sell, rent, or distribute your personal particulars to third-party marketing companies. Data is only accessible to the administrator for guidebook delivery purposes.

5. Payment Security

All physical guidebook purchases are settled manually through PayNow / SGQR transfers. We do not collect or store credit card details or bank account passwords on this website. Payments are verified manually using the reference transaction code generated during checkout.

6. Your Rights

You may request the correction or deletion of your order log information or email data from our systems at any time by contacting us at yangxu624@gmail.com.