Effective date: February 1, 2022

Shanghai Yingsheng Electronic Technology Co., Ltd. and its subsidiaries and affiliates(collectively referred to as "Ensen" or "we") is committed to providing you with a superior service experience. If you would like to create a new after-sales service, we recommend using this after-sales service form, which will generate a "pending task" directly to us, with no transit or delay, and a more detailed description of the service you need and the problem you need to solve. We will receive your message immediately and contact you by phone or email within 8 working hours; if we confirm the need for on-site service, we will be there within 72 hours.