Exports of Chinese technology to Russia plummeted in March after US-led sanctions took effect, US Commerce Secretary Gina Raimondo said on Tuesday.. She called it a sign of Beijing's wariness about violating trade bans, writes The Washington Post..

Chinese laptop shipments to Russia fell 40 percent in March from February, while smartphone exports fell by two-thirds. Exports of telecommunications network equipment fell by 98%, added Raimondo.

Whether China is ready to help Russia resist sanctions remains an open question for Western politicians, the publication says.. Export data previously reported by The Wall Street Journal, US, which may include limiting technology sales to Chinese companies.

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Which companies stop deliveries of goods to the Russian Federation.

The export bans were not intended to block the sale of consumer goods such as smartphones and laptops to Russia.. But trade lawyers say some companies have stopped deliveries of electronic goods to Russia altogether..

In March, Apple announced that it was suspending all product sales in Russia..

A few days later, Samsung also suspended sales of all products, including smartphones and computer chips..

And according to the latest figures from International Data Corp.. (IDC), Apple, Samsung and Chinese Xiaomi entered the top three smartphones in Russia in the first quarter in terms of deliveries.

Xiaomi did not immediately respond to a request for comment on its sales to Russian buyers.. And Huawei, one of the world's largest manufacturers of telecom networking equipment, declined to say whether shipments had been cut..