Abstract: A tree trimming apparatus includes a movable carrier, a shredder device, a transmission hose, and a support stand. The movable carrier has a container. The shredder device includes a housing, a plurality of cutters, and a motor. The housing has a through hole. The cutters are rotatably positioned in the housing. The motor is located on the housing and is connected to the cutters. The transmission hose has a first end portion and a second end portion. The first end portion is connected to the through hole, and the second end portion is aligned with the container. The support stand is connected between the movable carrier and the shredder device. When the cutters contact a branch, the branch is cut and enters the housing, and falls into the container through the through hole and the transmission hose.

Abstract: A wind-powered fresh water generator is provided. The wind-powered fresh water generator includes a wind rotation module disposed on a beam, a cooling and fresh water generating module connected to the wind rotation module, and a water collecting system disposed below the cooling and fresh water generating module. The wind-powered rotation module provides a rotation motive power to the cooling and fresh water generating module. The water generated by the cooling and fresh water generating module is collected by the water collecting system.

Abstract: A sea wave power generation equipment includes a floating body, a frame, a plurality of rotating shafts, a plurality of first gear wheels, at least one fixing base, a generator, a transmission shaft, a plurality of second gear wheels, a plurality of collision boards, and a plurality of ratchet structures. Each of the collision boards includes a rotation portion and a board body. Each of the ratchet structures includes a pawl portion and a ratchet portion including a plurality of teeth. When the board bodies are collided with a sea wave in a direction, each of the pawl portions hooks one of the teeth of one of the ratchet portions. When the board bodies are collided with another sea wave in another direction reverse to the direction, each of the pawl portions slides a portion of the teeth of one of the ratchet portions.