Farmers choose a reliable supplier of high-quality agricultural plastic products by considering several factors. They look for suppliers with a strong reputation and positive customer reviews. They also check for certifications that ensure the quality of the products, such as ISO standards. Farmers often request product samples to test the durability and effectiveness of the plastics. They may also consider the supplier's history of innovation and their commitment to environmental sustainability. Additionally, the cost-effectiveness, delivery times, and after-sales service are crucial factors in their decision-making process. Building long-term relationships with suppliers who can provide consistent quality and support is also a priority for farmers.