Ms. Cheng lived in Penghu is an owner of the hostel. In order to keep tidy, she uses vacuum cleaner. The storage capacity of the battery was very low.  She also found out that the dust container are filled with scraps and crumbs,and thus becomes an ideal breeding ground for bacteria. What’s worse, the vacuum cleaner sometimes smelled burnt.  One day, when she chatted with the clients of the hostel, she knew that CLW power has the service of replacing the battery. She instantly contacted with us and also paid the service of cleaning the machine. After our engineer received the case, he instantly tested the vacuum cleaner. After the check-up process, we sent the video of testing the vacuum cleaner and all the notifications to Ms. Cheng. After she receives the vacuum cleaner, Ms. Cheng gives CLW power the high praise. She also recommend CLW power to her elder sister in Tainan, older brother in Taichung and other family members. Everyone loves the CLW power.