The company said Tuesday it had struck the $37-million deal with a humanoid robotics testing centre based near China's border with Vietnam.

The project will use mainly the latest version of UBTech's "Walker" robots to test practical humanoid applications such as helping border management, handling logistics or patrolling factories.

UBTech said it would start delivering the robots, which can swap their own batteries, to the centre in December.

It did not say whether they would be powered by artificial intelligence or operated remotely.

China's government has encouraged domestic firms to develop humanoids in the hopes of leading the global robotics industry.

An April report published by Leaderobot, a specialist consulting firm, predicted that China's humanoid robotics industry would reach 82 billion yuan ($11.6 billion) in 2025 -- accounting for half of global sales.

This month, a robot made by Shanghai's AgiBot set a Guinness World Record for the longest reported distance ever walked by a humanoid machine, having completed a three-day, 100-kilometre trek.

Beijing hosted the world's first-ever humanoid robot games in August, where more than 500 "athletes" vied in disciplines ranging from basketball to competitive cleaning.

Large-scale real-life use cases remain elusive though.

Goldman Sachs warned recently that the sector risks overcapacity as production scales up rapidly without actual orders.

UBTech said Tuesday its Walker series has generated 1.1 billion yuan in sales so far this year.

"The orders we have received far exceed the announced number," UBTech executive Tan Min told local media this month, addressing the overcapacity concerns.