Cold runner injection molding is a metal casting process that uses unheated molds and channels to inject molten plastic into the mold cavities. The quality and service of cold runner injection molding supplier are important factors for the success of your project. You can evaluate the quality and service of cold runner injection molding supplier by checking their certifications, such as ISO 9001, ISO 14001, etc., that demonstrate their compliance with quality standards and environmental regulations. You can also check their reviews, samples, and feedback from previous customers to get an idea of their performance, reliability, and customer satisfaction.