HONG KONG — Huawei launched its own HarmonyOS mobile operating system on its handsets on Wednesday as it adapts to having lost access to Google mobile services two years ago after the U.S. put the Chinese telecommunications company on a trade blacklist.

The Shenzhen-based company announced that about 100 Huawei smartphone models will use its proprietary HarmonyOS system, and that the operating system will also be available on certain tablets and smart screens in the fourth quarter of the year.

The U.S. put Huawei on an “entity list,” saying the company might aid China’s espionage efforts, an accusation the company denies.