| 安全 | ān quán | safe; secure; safety; security |
| 认证 | rèn zhèng | to authenticate; to approve |
| 唯一 | wéi yī | only; sole |
| 购买 | gòu mǎi | to purchase; to buy |
| 联系 | lián xì | connection; contact; relation; to get in touch with; to integrate; to link; to touch |
| lián xì | variant of 聯繫|联系[lian2 xi4] | |