第二位为发牌机关代号（A-Z的字母）第3到第7位为序号（由字母或数字组成，但不存在字母I和O，防止...
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3. We send samples for customer to check the quality. 4. We provide an English manual for using and maintaining. 5. All products and accessories have been tested by three times before ship out. 6. All products have one year warranty. If there ...