Terms of Service
HENGCHENG LLC · Last updated: August 26, 2026
These Terms of Service ("Terms") govern your use of hengcheng.us and any purchase made through our online stores operated by HENGCHENG LLC ("Hengcheng", "we", "us"). By using our website or placing an order you agree to these Terms. Our software products Voicefall (voicefall.com) and VMLogin (vmlogin.us) are subject to the separate terms published on those sites.
1. Orders and payment
All orders are subject to acceptance and product availability. Prices are shown in US dollars unless stated otherwise and may change without notice. Payment is collected at the time of order through our payment providers. We may cancel or refuse any order, in which case any payment made will be refunded.
2. Shipping and delivery
We ship worldwide. Typical delivery windows are 5–11 business days but are estimates only and are not guaranteed. Risk of loss passes to you upon delivery to the carrier. You are responsible for any import duties or taxes charged by your country.
3. Returns and refunds
You may request a return within 30 days of delivery for items that are unused and in original packaging. Refunds are issued to the original payment method after the item is received and inspected. Damaged or defective items will be replaced or refunded at no cost to you. To start a return, email [email protected] with your order number.
4. Product information
We make every effort to describe products accurately. Colors and dimensions may vary slightly from images. If a product is not as described, you may return it under Section 3.
5. Acceptable use
You agree not to use our website for any unlawful purpose, to interfere with its operation, to attempt to gain unauthorized access to any systems, or to copy or scrape content without permission.
6. Intellectual property
The Hengcheng name, logo, website content and product designs are owned by HENGCHENG LLC or its licensors and are protected by applicable intellectual property laws. Nothing in these Terms grants you any right to use them without our written permission.
7. Disclaimer and limitation of liability
Our website and products are provided "as is". To the fullest extent permitted by law, we disclaim all warranties not expressly stated, and our total liability for any claim relating to an order is limited to the amount you paid for that order. We are not liable for indirect, incidental or consequential damages.
8. Governing law
These Terms are governed by the laws of the State of California, USA, without regard to its conflict of law rules. Any dispute will be resolved in the state or federal courts located in Orange County, California.
9. Changes
We may update these Terms from time to time. Continued use of the website after changes are posted constitutes acceptance of the revised Terms.
10. Contact
HENGCHENG LLC, 530 Technology Drive, Suite 100, Irvine, CA 92618, United States
Email: [email protected]