You can check a Chinese company's legal disputes by conducting a search on the following official platforms:

China Judgements Online (https://wenshu.court.gov.cn/)
The National Enterprise Credit Information Publicity System (https://www.gsxt.gov.cn/index.html)
China Executive Information Disclosure network (http://zxgk.court.gov.cn/shixin/)

These websites contain public records of legal disputes involving Chinese companies. Please note that some of these websites may be in Chinese language only, so you may need to use a translation tool or seek assistance from a trusted third-party China company verification service provider. It's important to conduct thorough due diligence before doing business with any Chinese company.