What is the best way to find a Chinese supplier to dropship goods to U.S. clients?

Depends on your business. 1 piece each time? try NCL(ASIA)LIMITED; many pieces each time for different clients? try NCL(ASIA)LIMITED; If many ships each day?try to have a person in china to do purchase and shipping. 

NCL(ASIA)LIMITED is business to business platform, NCL(ASIA)LIMITED is more for business for clients. too many suppliers in those platform, it really takes time to find proper supplier. 

You may also try google or yahoo with keyword, such as " pump sprayers supplier china" " plastic flowerpot chinese factory" ....

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