Tremors were felt in the Greek capital of Athens and as far away as the southern island of Crete
The world's two largest economies have now erected trade barriers covering virtually all of their $660 billion in annual trade in merchandise.
The latest announcement came after trade negotiators held talks in Shanghai this week, the first face-to-face discussions since Trump and Chinese President Xi Jinping agreed to a truce in June.
On Thursday Trump told reporters he was "not concerned... at all" by the negative reaction among investors, saying he had anticipated it.
"Trump sent the market in a tailspin," said Alfonso Esparza, senior market analyst at OANDA.
"So far, the US consumer has been spared from the tariffs on Chinese goods, but as Trump's threats grow in scope, so does the potential impact (as) higher costs will have to be passed down from American companies", he added.
Hong Kong lost 2.3 per cent, while Tokyo declined 2.4 per cent and Shanghai fell 1.5 per cent. Taipei shed one percent while Seoul dropped 1.9 percent.
"Selling will likely lead trade", Okasan Online Securities said in a note.
"There are fresh signs that US-China trade frictions are worsening again" while investors are likely to stay away from buying ahead of the weekend, it added.
Japan's move to remove South Korea from a "white list" of favoured export partners added to the trade jitters, as the US allies spar over a long-running dispute on forced labour during World War II.
A string of South Korean court rulings ordering Japanese companies to compensate forced labour victims has infuriated Japan, which argues the issue was resolved when the two countries normalised ties.
The latest measure comes after Tokyo last month tightened the rules on exports of three products key to South Korea's chip and smartphone industries, raising fears for global supply in the sectors.
Hidehiko Mukoyama, senior economist at Japan Research Institute, said the outlook was grim.
"This is in effect a de facto sanction" against Seoul he told AFP, predicting retaliatory measures from South Korea, where public boycotts of Japanese goods have already taken place.
Oil prices made a cautious recovery after suffering a rout Thursday as Trump's tariffs announcement fuelled concerns about lower demand, sending Brent plunging seven percent and WTI plummeting 7.9 per cent, its worst decline in a session since February 2015.
Tokyo - Nikkei 225: DOWN 2.4 percent at 21,031.63 (break)
Hong Kong - Hang Seng: DOWN 2.3 percent at 26,939.44
Shanghai - Composite: DOWN 1.5 percent at 2,864.30
Pound/dollar: DOWN at $1.2110 from $1.2140 at 2100 GMT
Euro/dollar: DOWN at $1.1075 from $1.1090
Dollar/yen: DOWN at 107.02 yen from 107.40
Brent North Sea crude: UP $1.61 at $62.11 per barrel
West Texas Intermediate: UP $1.08 at $55.03 per barrel
New York - Dow: DOWN 1.1 percent at 26,583.42 (close)
London - FTSE 100: FLAT at 7,584.87 (close)
Tremors were felt in the Greek capital of Athens and as far away as the southern island of Crete
The Buyback Programme is a huge step in creating solutions for nature
Dozens of other products that contain benikoji — including miso paste, crackers and a vinegar dressing — have been withdrawn from the market
The passengers were on a trip to an Easter weekend church gathering
Pavel Durov said measures were taken immediately to stop 'a flurry of unknown users posting messages appearing to call for violence'
Motorists have been advised to drive carefully and abide by traffic rules and regulations
Right education methodologies at the grass root level, exposes students to technologies that will impact them in their growing years
Innovation, digital transformation will pave the way for more large-scale crypto deals in future