Joysong provides regular maintenance of the following specifications of capacity UPS equipment：

• a. Single camera type 6KVA~12KVA (twice a year)

• b. Single camera type 12KVA~20KVA (twice a year)

• c. Three camera types 20KVA or more (three times a year)

All customers who order UPS from the company enjoy the full warranty service during the warranty period; if they are improperly used, disassembled and modified, and subjected to force majeure or equipment migration.

Upon expiration of the warranty period, the company will provide a full service or preventive maintenance service plan.