I've actually owned a shockingly good and affordable set of Chinese tires. They were the Giti Greatwall brand. I had a 92 Cadillac Seville that was nearing 200k, and since I wasn't sure how much longer I was going to own the car, I decided to buy a cheap set to get it rolling.
They turned out to be superbly quiet, grippy on rain and snow, and smooth as silk. I went all over the country with them in all kinds of harsh weather conditions.
http://www.giti.com/en/milestones.asp
Among Chinese brands, Giti is fairly well respected, providing OEM tires for established automakers [in China] like Buick, Chevrolet, and Wuling.
But I've never heard of WinRun. Their website isn't even complete.
http://www.winruntires.com/
Click on "Tire Technology" on the left. They didn't even fill out the rest of the page template.