Vietnam's trade surplus with the United States grew in January by nearly 30% year on year as exports climbed, while imports from China hit a new monthly high, official data released on Friday showed. Hanoi has been in talks for months with Washington over a possible trade agreement after the Trump administration imposed 20% tariffs on Vietnamese goods in August and threatened higher duties on goods made mostly from components that Vietnam imports from China. Despite the higher tariffs, Vietnamese exports to the United States have continued to rise and reached a record high last year.