Focused on tools. Built for the world.
Company profile
Beijing Haichuan Youbang Technology Co., Ltd. (brand: HCYB Tech) was founded in January 2018 and is based in Beijing. We are a technology company focused on software engineering and mobile product innovation.
Our self-developed document toolkit One Office is built natively for Android, iOS and HarmonyOS. A lightweight, privacy-first local tool, One Office previews and edits PDF, Word, Excel and PowerPoint files, with conversion and PDF tools (merge, split, encrypt, watermark) — all processed on the device, with no uploads and no content collection. All three are built natively, so one product experience covers Android, iOS and HarmonyOS. The product is distributed on Google Play, the App Store and major app stores in China, including Huawei, Xiaomi, OPPO, vivo and Tencent MyApp, serving users worldwide.
Looking ahead, HCYB Tech will grow from One Office with a clear global strategy, expanding a worldwide portfolio of utility apps across more productivity scenarios and building an integrated software business across development, operations and service — a software company users everywhere can rely on.
Milestones
Focused on software R&D, building capability around productivity and utility tools.
Our first self-developed document toolkit ships natively on Android, iOS and HarmonyOS, handling mobile document work fully on device.
New productivity and utility apps for users worldwide.
How we work
Getting every detail right matters more than a long feature list.
Products start from real usage scenarios, not from technology.
Sustained R&D investment to build tools people keep using.
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