I suggest that according to your financial strength, you should first make the market of small machine rice flour factory and then develop customers. As long as the customer volume is stable and the market is opened, the river flour factory will be introduced to produce river flour, and then the two kinds of flour will be made together.
No matter how big the city is, there must be someone in the local area who is already doing this business, so your first consideration should be how to develop customers and get more orders. For people who are doing this business, it is best to pull together.
In terms of machine selection, the machine workmanship and technology of Guangzhou Huahui Food Machinery Factory are good, and the quality of rice noodles made is also good, and the price is quite favorable. This aspect is not very worrying. You can check the machine then.
There is also a machine of Guangzhou Yan Guo Machinery, which is located in Tianhe, Guangzhou. And the service of big factories is more secure. The machine has been sold for more than ten years and is very popular, but the price is a little higher than Huahui, depending on your choice.
Strategy determines success or failure. I wish you success in starting a business!