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1Appendix I Product maintain guarantee card
When product occur failure, please fill well this card carefully, tear off it and submit it to us
with the product.
Product name QA390 Serial Number
Purchase date DD MM YY
Customer name Zip code
Mobile phone Fix phone
Shipping address
Feedback of
Abnormal
Situation
Cause Analysis
and Solution
（This part filled by the manufacturer）
Remarks
ShenZhen QLS Electronic Technology Co.,Ltd (Quloos)
Contact: Chen Xue Qian (Clark)
E-mail :cxqmcu@cxqmcu.com
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