eco-PENs that are already in operation can be upgraded in a very short time, thanks to the spare parts kits. Test result after 120 hours dispensing: The standard rotor on the right, with a hard chrome layer, shows signs of wear over time when used with highly abrasive materials, depending on the process. Detail view rotor wear: Standard rotor left … Continue reading Highly Abrasive Materials Reliably Applied in Very Small Quantities