Committed to providing customers with high-quality services, the pursuit of customer satisfaction is our consistent goal.
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Quality assurance period：
Eighteen or twelve months after the product is manufactured or used

Quality Assurance Content：
Installation shall be carried out in accordance with the requirements of the operation instructions during the warranty period, and failures due to substandard product quality shall occur under correct operation and operation conditions.

Contents not suitable for quality assurance：
1. Faults caused by improper connection between product installation and other devices
2. Failures caused by improper installation, use and operation of products not in accordance with the specifications
3. Faults caused by use outside specifications and by use of lubricants other than those recommended by our company
4. Faults caused by improper devices or special specifications connected by users
5. Faults caused by alteration of the product or structure
6. Faults caused by non-conformity of parts selected by users
7. Faults caused by external forces or natural disasters or other irresistible disasters
8. Natural wear and aging of wearable parts such as bearings and oil seals under normal service conditions