How to identify Worldwide Industrial Zones?

Hello everyone, I have a question. I'm trying to identify if there is a source I can find representative industrial zones in different categories. Let me clarify it for you. I want to know if there is a specific region in China (I know that the major ceramic suppliers are there) that is specialized in manufacturing ceramics (I don't know, maybe Guangzhou for example). Is there any site or resource that I can find that out? I know that in Alibaba or Go4World Business, and other procurement sites, I can look for suppliers. But in that sense, I end up searching one by one. I can't know whether or not the region that the supplier is inserted is a industrial center/zone and if there are other suppliers there. So basically, I'd like identify those poles in a few areas: - Ceramics - Hardlines and home accessories (bamboo accessories, metal cans for gifts, jugs, baskets) - Softlines and home accessories (pillow, cushions, blanket, dish towel, cloth napkin, place mat) - Bed and Bath (sheets, towels, pillowcases, etc) - Casual Clothing Those poles need to be representative worldwide. Can anyone help me out here? Either by telling me which poles you already know or by recommending articles, websites, resources for me to find that out) Thanks in advance, Fernando