1. Understand your needs: First, clarify what materials you need to refine, such as rubber, plastic, chemical raw materials, etc. It is also very important to determine the required processing quantity and product specifications.

2. Consider functionality: Different open mills have different functions and characteristics. Common small open mills include two roll and three roll open mills. Both can be used for mixing, plasticizing, and pressing operations, but the three roll open mill is usually better in terms of plasticizing ability and uniformity. Choose the appropriate type based on your needs.

3. Safety and reliability: Ensure that the selected open mill meets safety standards and has good reliability. Check the safety measures of the machine, such as protective covers, emergency stop buttons, etc.

4. Technical support and after-sales service: Choose a supplier that provides excellent technical support and after-sales service. This includes training operators, equipment maintenance, spare parts supply, etc. Ensure timely access to help and support.

5. Considering cost factors: The price of the open mill varies depending on the brand, model, and function. Develop a budget before purchasing and ensure that the full lifecycle cost of the equipment, including operation, maintenance, and energy consumption, is taken into account.

6. Brand and Quality: Choosing a brand of open mill usually has better quality and reliability. These brands usually have rich experience and technical strength, and offer longer warranty periods.

8. Sample testing: If possible, try testing some different models of open mixers.

In short, choosing a small open mill that suits one‘s needs requires comprehensive consideration of factors such as material type, processing capacity, product specifications, functionality, safety, reliability, technical support, cost, and feedback from other users.

Attached are pictures of our company‘s refining machine for your reference：