Here are some Maintenance & Repair FAQs of the HE-machine. We’re a coil feeders manufacturer that provides a one-year free warranty and lifetime technical support. And the after-sales service includes Installation, On-site Training, Regular Security Checks, Spare Parts Repair, etc. To learn more about our after-sales service, please visit the web page: After-sales Service. For more FAQs, please visit the web page: FAQs.