The chances of you finding "OEM" parts for these and/or 99% of similar items are ZERO. Industry doesn't want them rebuilt. They want people buying new. One place to start with for finding parts is Alibaba. You can find a great many aftermarket parts there. Their venders mostly sell wholesale, be prepared to buy quantities. DX is another viable source and they don't mind selling singles. Be prepared to wait several weeks to a month or more from either of these sources of things. The merchandise needs to pass through customs, etc... Plus the Chinese version of it is in stock, means they know where to find it or how to make it. I wish you luck on your business venture. I wouldn't count on many of your "competitors" showing you how to take food out of their mouth or the family vacation away from their children.