There are many ways to find solar flood lights suppliers in China, you can search on alibaba.com, made-in-china.com, which are two main B2B platforms with many solar lights suppliers, some of them are manufacturers, others are trading companies, you can distinguish them during the discussion. Also, you can search on google, I have to say that, google is a better way cos those companies who have a company website with good rank are not small companies, at least they have professional salespeople to present their companies and products online, these people could be a professional partner who can trust. Solar flood lights suppliers are from two main areas: Shenzhen & Zhongshan. Do remember to know that Zhongshan is more for a production area, and Shenzhen is more for a sales & marketing area, not 100% correct but you can believe it 70-80%. If you want to cooperate with solar flood lights factories, contact the ones from Zhongshan, if you want trading companies who can handle more things than only production, you can contact the Shenzhen ones. Just a suggestion. Anyway, you always need to spend time talking to them, or trying some samples or orders, to know if they are suitable solar flood lights suppliers to work together with.