China says the U.S. continues to discriminate against its companies despite Washington cutting telecoms firm Huawei a little more slack. 

The Department of Commerce announced on Monday it would allow the company to continue doing business with American customers for another three months.  But neither Huawei nor Beijing are impressed by the reprieve. 

Thanks for nothing—which sums-up Huawei's reaction after the U.S. granted it a 90-day extension to trade with U.S. companies. 

The Chinese smartphone maker is also a world leader in ultrafast 5G broadband infrastructure but was blacklisted in the U.S. at the height of the trade battle with China. 

And while Huawei says this extension to maintain limited business with American customers won't do much for its business, the Chinese government went further. 

Geng Shuang, Chinese Foreign Ministry Spokesperson says, “We urge the U.S. to stop generalizing the concept of national security, abusing export controls and adopting discriminatory and unfair practices against specific enterprises in other countries, and politicizing economic and trade issues.” 

The Trump administration says Huawei's equipment poses a threat to U.S. national security—part of a litany of complaints that triggered a trade war with China. 

But the company has found fans among communications firms serving remote parts of the U.S. at risk of losing internet access if Huawei is shut out. 

And this latest reprieve is very limited for Huawei. Resolving ongoing security concerns aren't part of a preliminary trade deal with China that's yet to be signed. And the Trump administration has not decided if individual U.S. companies can sell Huawei vital components it needs to run its equipment.  

CGTN's Owen Fairclough reports.