Contact Us

Contact Us

We sincerely welcome every customer to share questions, feedback, and suggestions with us.

Whether you need assistance with product information, order status, shipping, tracking, returns, refunds, cancellations, after-sales support, or another service-related matter, the SUMMP customer support team is here to assist you.

SUMMP is operated by Chengdu Dongxia Rongguang Trading Co., Ltd. Chengdu Dongxia Rongguang Trading Co., Ltd. is responsible for the operation of this website and related customer support services.

You can contact us through the official information below:

BRAND NAME
SUMMP
CUSTOMER SUPPORT EMAIL
For product questions, orders, shipping, tracking, returns, refunds, cancellations, and after-sales support
LEGAL COMPANY NAME
Chengdu Dongxia Rongguang Trading Co., Ltd.
Official operating company of SUMMP
BUSINESS ADDRESS
Unit 3, Building 7, Room 615, 6th Floor,
No. 280 Baijia Section, Dajian Road,
Xihanggang Subdistrict, Shuangliu District,
Chengdu City, Sichuan Province, China
Registered business address of Chengdu Dongxia Rongguang Trading Co., Ltd.
RETURN ADDRESS
Chengdu Dongxia Rongguang Trading Co., Ltd.
Unit 3, Building 7, Room 615, 6th Floor,
No. 280 Baijia Section, Dajian Road,
Xihanggang Subdistrict, Shuangliu District,
Chengdu City, Sichuan Province, China
This address also serves as our official return address for approved customer returns. Please contact customer support before sending a return.
CUSTOMER SERVICE HOURS
Monday to Friday
9:00 AM – 6:00 PM (Hong Kong Time)
We aim to respond to customer inquiries within 24–48 business hours.

Return Information

Our registered business address also serves as our official return address for approved customer returns.

Before sending a return, please contact our customer support team at service@summp.com to request return authorization and receive the applicable return instructions.

Providing the return address publicly does not remove the requirement to request return authorization before sending an item back.

Returns sent without sufficient order information or without following the applicable return instructions may experience processing delays.

Customer Service Hours

Monday to Friday
9:00 AM – 6:00 PM (Hong Kong Time)

We value every customer inquiry and aim to respond to emails and service requests within 24–48 business hours.

When contacting us regarding an existing order, please include your order number whenever possible so that our customer support team can assist you more efficiently.

Brand Name: SUMMP
Customer Support Email: service@summp.com
Legal Company Name: Chengdu Dongxia Rongguang Trading Co., Ltd.
Business Address: Unit 3, Building 7, Room 615, 6th Floor, No. 280 Baijia Section, Dajian Road, Xihanggang Subdistrict, Shuangliu District, Chengdu City, Sichuan Province, China
Return Address: Chengdu Dongxia Rongguang Trading Co., Ltd., Unit 3, Building 7, Room 615, 6th Floor, No. 280 Baijia Section, Dajian Road, Xihanggang Subdistrict, Shuangliu District, Chengdu City, Sichuan Province, China
Customer Service Hours: Monday to Friday, 9:00 AM – 6:00 PM (Hong Kong Time)
Response Time: 24–48 business hours

Thank you for choosing SUMMP. We appreciate your feedback and look forward to assisting you.