When purchasing a waste paper baler, it is very important to confirm the supplier's reputation and reviews. Here are some steps and methods to help you confirm:

1. Online research: First, search the supplier's name on the Internet to see if there are any customer reviews, forum discussions or news reports about the supplier. This information can be obtained from third-party websites, industry forums, social media platforms, etc.

2. Industry reputation: Ask other companies or peers in the same industry. They may have experience working with the supplier and can provide first-hand evaluation information.

3. Customer cases: Require suppliers to provide a list of their customer cases, including names of customers they have cooperated with, time of cooperation, products and services provided, etc. You can contact these customers to find out what they have to say about the supplier.

4. Qualification certification: Check whether the supplier has relevant industry qualification certification, such as ISO quality management system certification, etc. These certifications can be used as a reference for the supplier's professionalism and reliability.

5. On-site inspection: If possible, conduct an on-site inspection in person or by entrusting a third party to the supplier's production base to check its production capacity, product quality, working environment, etc.

6. Trial run: Before deciding to purchase in large quantities, you can purchase a small amount of products for trial run to test the quality of the product and the service level of the supplier.

7. After-sales service: Understand the supplier's after-sales service policy, including warranty period, maintenance services, spare parts supply, etc. Good after-sales service is an important reflection of the supplier's reputation.

8. Contract review: Before signing a contract, carefully review the contract terms to ensure that the supplier’s responsibilities and obligations are clear and to avoid possible disputes in the future.

Through the above methods, you can have a more comprehensive understanding of the supplier's reputation and evaluation, so as to make more informed purchasing decisions.