IP 端口检测

https://ping.sx/check-port

Everything windows 电脑软件

http://lulushare-cn.oss-cn-hangzhou.aliyuncs.com/Software/Windows%E7%94%B5%E8%84%91%E8%BD%AF%E4%BB%B6/Everything%20%E7%94%B5%E8%84%91%E7%89%88.exe

SSL 检测

https://www.ssllabs.com/ssltest/

国内商品归类查询

https://onetouch.alibaba.com/moBasedata/luyou/public/saasHScode/smartHS/index.htm

关税查询

https://onetouch.alibaba.com/moBasedata/luyou/public/saasHScode/tariffInquiry/index.htm

密码

生成随机密码 IP.cn - 创建密码 | 生成密码 | 随机密码|密码工具 https://useful.tools/password-generator

在线天数计算器

https://www.ip.cn/datecalc.html