China's biggest ride-hailing company Didi Chuxing will allow users of its smartphone app to access services provided by apps of three domestic auto companies and others, in a push to generate more orders.

Didi said in a statement on Monday it has opened its ride-hailing platform to third parties including those of FAW Group, Dongfeng Motor and Guangzhou Automobile Group.

Passengers can order ride-hailing services from FAW, Dongfeng and GAC from Didi's app, which has 550 million registered users in China.

The move accelerates a trend in China where automakers are launching their own ride-hailing services, while ride-hailing providers such as Didi are teaming up with automakers to develop purpose-built cars for their services.

FAW, Dongfeng and Chongqing Changan Automobile set up a $1.5 billion Chinese ride-hailing venture with Alibaba, Tencent and retailer Suning earlier this year.

Car makers including Geely, SAIC and BMW have their own ride-hailing services in China, though some of them are regional services.

Didi will leverage its strength in artificial intelligence, operational expertise and marketplace strategies to help partners build capacities for connected vehicle operations, the statement said.

Didi Chuxing accounted for about 90 percent of all bookings in China's ride-hailing sector.