Is the cushioning system of the WNEE split-type damping hinge replaceable, and how about the after-sales cost?

Hello, the cushioning integrated damper of the WNEE split-type damping hinge is replaceable. Its springs and dampers are removable and replaceable, so the after-sales cost is low. While the universal hydraulic buffer system of the traditional one-piece hydraulic hinge is irreplaceable, and its power and cushioning systems are not removable, leading to high after-sales cost.