Congratulations on your selection of GMT smart lock products. For this reason, we hereby make a solemn service commitment to you: (1) The company strictly abides by the relevant national after-sales service specifications. The products are guaranteed to be replaced once a week and guaranteed to be free for one year. The products should be kept in good packaging within the guaranteed time range, without affecting the secondary sales; In case of quality problems within the warranty period, the local after-sales service team shall be responsible for the warranty. (2) In case of emergency during customer use, after-sales personnel will respond to on-site after-sales service within 2 hours. (3) Outside the warranty period, the cost of parts replacement and maintenance may be involved, which will be charged in strict accordance with the company's parts price standards and specifications.