2023-Utility Model--A traction rope breaking protection device for a traction type zip line
2023 - Utility Model - A recovery device for a mountain road pulley
2023-Utility Model--A Self-powered Adjustable Speed ??Climbing Fitness Device
2023-A speed limiting device for a zip line
2024-Utility Model-Deceleration Pulley for Slip Rope
2024-Utility Model--A Safety Buckle
2024-Utility Model--An angle measuring mechanism that is easy to adjust
