It's the same in chemistry. What gets published in Chinese journals would get flat-out rejected from a US peer-reviewed journal. And the data is about as trustworthy as an old (1970's-ish) Russian journal, where often they just group a whole bunch of variations on a compound together and say they all react with the same mechanism, even when they shouldn't. That makes me have to disprove them, which eats up a lot of my own time. I've had to do it with both Chinese and Russian data in the fuel-cell polymer field.