BEIJING (Reuters) - Chinese technology giant Huawei, threatening to lose Android because of US sanctions, on Friday unveiled a new system to run its smartphones and "bring more harmony" to the world.

The system, dubbed "Harmony OS", was introduced by CEO Richard Yu at a Huawei conference in Dongguan, southern China. The new system aims to run different categories of Huawei devices in a unified "digital environment" (ie a network of system applications similar to those of Google and its Android system).

"We want to achieve more harmony in the world," Richard Yu said at a time when Huawei was placed on the US blacklist on suspicion of spying for Beijing, which the company denies. Huawei, the world's second smartphone group, found itself in May amid a trade war between Beijing and Washington against a backdrop of technological competition.

Huawei's blacklisting means that US companies are no longer authorized, in theory, to sell their leading 5G Internet technology, their technology products. Washington has given it a three-month exemption due to expire next week.