Abstract: The present disclosure discloses a rotating device for adjusting the projection angle in a large range, which belongs to the technical field of projection ceiling lights, including a base plate, a movable plate, a connecting screw and a driving mechanism, wherein the movable plate is hinged on the base plate, and the driving mechanism is connected to the movable plate, the lower end of the connecting screw is connected to the base plate, the connecting screw passes through the driving mechanism, and the connecting screw is screwed to the driving mechanism.

Abstract: The present disclosure discloses a rotating device for adjusting the projection angle in a large range, which belongs to the technical field of projection ceiling lights, including a base plate, a movable plate, a connecting screw and a driving mechanism, wherein the movable plate is hinged on the base plate, and the driving mechanism is connected to the movable plate, the lower end of the connecting screw is connected to the base plate, the connecting screw passes through the driving mechanism, and the connecting screw is screwed to the driving mechanism.

Abstract: The present disclosure relates to a leather coating composition comprising or consisting of a hydrosilylation curable silicone elastomer composition designed to be used as a topcoat for a synthetic leather material, particularly a silicone-based synthetic leather composite material. A silicone coating as a topcoat for a synthetic leather material which is the cured product of the composition, methods of making the topcoat, synthetic leather material utilizing same and uses of the synthetic leather material products are also disclosed. The topcoat is designed to provide a highly crosslinked silicone matrix containing silicon-free organic micro-particles to minimize or at least decrease change in gloss after abrasion.