about Us

Last Updated: February 28, 2026
Company Name:  Lanzhou Yazheng Commerce & Trade Co., Ltd.
Address: Room 2702 (C0269), 27th Floor, Real Estate Building, No. 1 Tongwei Road, Zhangye Road Street, Chengguan District, Lanzhou City, Gansu Province
Legal Representative: Liu Yazhen
Unified Social Credit Code: 91620102MAK4YQQY7U

About Us

 Lanzhou Yazheng Commerce & Trade Co., Ltd.(Unified Social Credit Code: 91620102MAK4YQQY7U) focuses on operating electronic products and related businesses in the United States. We are committed to providing high-quality products and thoughtful services, adhering to the principles of honest business practices and customer-first service. We guarantee a seamless shopping experience for our users. Below is detailed information about our company and services.

1. Company Information

Company Name:  Lanzhou Yazheng Commerce & Trade Co., Ltd.
Address: Room 2702 (C0269), 27th Floor, Real Estate Building, No. 1 Tongwei Road, Zhangye Road Street, Chengguan District, Lanzhou City, Gansu Province
Legal Representative: Liu Yazhen
Unified Social Credit Code: 91620102MAK4YQQY7U

2. Customer Service Information

Customer Service Phone: +86 19202338340
Working Hours: Monday to Friday, 9:00 AM to 6:00 PM (UTC+8:00). Outside of working hours, you can leave a message, and we will respond to your queries and address your needs promptly during working hours.

3. Core Business and Service Commitment

Our core business is the operation of electronic products in the United States. We are committed to providing compliant and high-quality products while offering comprehensive pre-sales, in-sales, and after-sales services. The details of our services are as follows:

• Order Services: After an order is placed, modifications (including product model and shipping address) can be made within 12 hours. After 12 hours, no modifications are allowed. Please carefully check your information when placing an order.

• Shipping and Delivery Timeliness: For in-stock orders, we typically ship within 1-2 business days after payment (excluding weekends and holidays). The actual delivery time is 5-7 business days, and specific details can be tracked via logistics information.

• Price and Tax Information: All electronic products listed on the platform have the relevant taxes included, with no hidden fees. The amount displayed at payment is the total amount due. Customs duties will be charged according to the local policies of your delivery location. We do not bear any customs-related fees, and you are responsible for paying customs duties as required by local customs.

• After-Sales Guarantee: All of our electronic products come with a 1-year free warranty starting from the date of receipt. If you encounter any product issues during use, you can contact customer service for assistance.

4. Contact Us

If you have any questions, suggestions, or need assistance, please contact us through the following methods, and we will be happy to serve you:

Customer Service Phone: +86 19202338340
Company Address: Room 2702 (C0269), 27th Floor, Real Estate Building, No. 1 Tongwei Road, Zhangye Road Street, Chengguan District, Lanzhou City, Gansu Province
Working Hours: Monday to Friday, 9:00 AM to 6:00 PM (UTC+8:00)

We declare that duno-mall is an independent fast fashion retailer and has no affiliation with any other luxury brands.