Warranty Services


The Must Warranty Policy is stated below. If you are ready to return product, please review our Return Merchandise Authorization Policy.

Must Warranty Policy are provided by Must Energy (Guangdong) Tech Co., Ltd. (“Must”) and cover defects in workmanship and materials. Must offers to our customers the following limited warranty, the MUST Products device and its components mentioned in User’s Manual shall be provided with 1 years’ warranty for normal use (man-made malfunctions excepted.) starting from the date of shipment from Must factory. In certain places where local laws have special provisions for the term of warranty, the foregoing term shall not be applicable. This warranty offers special legal rights. You are entitled to other rights pursuant to local laws. The Buyer/Customer is responsible for certain service and maintenance expenses. Please contact Must Customer Service for further details on specific products.

The following situation is not covered by the warranty:

  • Finished goods lost or serial number manipulated;
  • Loss or damage due to force majeure or external reasons;
  • Misuse, accident, negligence, unauthorized alteration or repair;
  • Overuse;
  • Violation of operation stipulations.

Within the 1-year warranty period, if the MUST Products is out of order in the range covered by the warranty, Must shall repair or replace the MUST Products in its own way. For warranty services, please contact Must Customer Service Center. The cost of delivery shall be charged by the customer.

Sales department

Tel: +86 757-82981066, 82981699, 82982699
Email: sales@mustess.com

Factory and Global service centre

1-5F, Building 8, South China power innovation Science Park. No.115 zhangcha 1st road,Chancheng District, Foshan city, China.