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Name: Hongxing VPN for China
Rating: 4.8 (20686 reviews)

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科学上网名：Slack

Slack 集合了聊天群组、大规模工具集成、文件整合与统一搜索等功能。它将电子邮件、短信、Google Drive、Twitter、Trello、Asana、GitHub 等 65 种工具和服务整合到同一平台上。