Abstract: A Christmas tree ring that can be assembled is provided, which includes a plurality of ring frames; two ends of the ring frames are respectively provided with a first insertion tube and a second insertion tube. A size of an outer surface of the second insertion tube is adapted to a size of an inner wall of the first insertion tube to achieve an insertion between adjacent first insertion tube and second insertion tube when the plurality of ring frames are spliced. The first insertion tube is provided with a connection hole, the second insertion tube is provided with a limiting element. By providing the ring frames, the ring frames are spliced together by the first insertion tube and second insertion tube provided on them. The plurality of ring frames are detachable, thereby greatly reducing packaging volumes, lowering transportation costs, and also facilitating consumers to assemble them themselves.

Abstract: The application provides a Christmas tree built-in lifting device comprising a base, a lifting device fixed on the base. The lifting device comprises an outer tube, an inner tube, a motor, a chain, a coupling, a transmission gear, a chain fixing plate, a driven gear. The Christmas tree lifting device is configured as a built-in chain lifting device, and the motor drives the chain to rotate and then drives the inner tube fixed on the chain to realize lifting. The lifting of this solution is faster and with less noise. The lower end of the built-in chain lifting device is configured as a contact to take power, and the upper end is configured as a contact to transmit power. The multi-stage lifting device can be stacked repeatedly as required, thereby making it more convenient for users to use as required, and the multi-stage lifting device is more convenient for transportation.

Abstract: A Christmas decoration device with optical fibers and a circuit control method are provided, the Christmas decoration device includes a controller, which is connected with a plurality of light-emitting components in series. The light-emitting components include light-emitting parts connecting with the controller in series, each light-emitting part is connected to an optical fiber part. The optical fiber part transmits light emitted by the light-emitting parts. The controller includes a control circuit, the light-emitting parts realize color switching under a control of the control circuit. A color switching function of the light-emitting parts is achieved through a design of the control circuit. A user can choose different color combinations according to needs, which adds more colors and changes to decoration, and creates a stronger festive atmosphere; the optical fiber part is used as a medium for transmitting light, and the light can be dispersed and spread to various corners.

Abstract: A derived cleaved amplified polymorphic sequence (dCAPS) molecular marker for identifying resistance of wheat to Fusarium crown rot caused by Fusarium pseudograminearum, primers and an application thereof are provided, relating to the field of wheat disease-resistant breeding and biotechnologies. The dCAPS molecular marker is located at a site of 676077050 to 676084414 base pairs (bp) on wheat chromosome 1B. A primer set for identifying the dCAPS molecular marker is provided. The resistance to Fusarium crown rot caused by Fusarium pseudograminearum can be rapidly predicted and screened through the molecular marker detection during seedling stage, which saves precious scientific research time and a lot of manpower and material resources, and the identification result is stable. Therefore, the method can accurately and efficiently screen a wheat variety with resistance to the Fusarium crown rot, and greatly improve a breeding process of a wheat with high-yield and resistance to the Fusarium crown rot.

Abstract: The application provides a Christmas tree built-in lifting device comprising a base, a lifting device fixed on the base. The lifting device comprises an outer tube, an inner tube, a motor, a chain, a coupling, a transmission gear, a chain fixing plate, a driven gear. The Christmas tree lifting device is configured as a built-in chain lifting device, and the motor drives the chain to rotate and then drives the inner tube fixed on the chain to realize lifting. The lifting of this solution is faster and with less noise. The lower end of the built-in chain lifting device is configured as a contact to take power, and the upper end is configured as a contact to transmit power. The multi-stage lifting device can be stacked repeatedly as required, thereby making it more convenient for users to use as required, and the multi-stage lifting device is more convenient for transportation.

Abstract: A three-joint linkage lifting device with built-in chain for Christmas tree, comprising an outer tube, a middle tube, an inner tube, an upper fixing sleeve for the outer tube, an upper fixing sleeve for the middle tube, a lower fixing sleeve for the inner tube, an electric lifting assembly, and a sliding hoisting rope, wherein the Christmas tree lifting bracket is configured to be an electric two-stage lifting bracket, and the components of the Christmas tree are sleeved outside the bracket, so that the Christmas tree bracket can be lifted and lowered by pushing the screw linear pushing device of the electric lifting assembly, the sliding hoisting rope is fixed on the electric lifting assembly, and when the middle tube rises, the sliding hoisting rope is jacked up to slide and pull up the inner tube synchronously.

Abstract: A three-joint linkage lifting device with built-in chain for Christmas tree, comprising an outer tube, a middle tube, an inner tube, an upper fixing sleeve for the outer tube, an upper fixing sleeve for the middle tube, a lower fixing sleeve for the inner tube, an electric lifting assembly, and a sliding hoisting rope, wherein the Christmas tree lifting bracket is configured to be an electric two-stage lifting bracket, and the components of the Christmas tree are sleeved outside the bracket, so that the Christmas tree bracket can be lifted and lowered by pushing the screw linear pushing device of the electric lifting assembly, the sliding hoisting rope is fixed on the electric lifting assembly, and when the middle tube rises, the sliding hoisting rope is jacked up to slide and pull up the inner tube synchronously.

Abstract: A connector structure for an inner-tube decorative lamp of a Christmas tree is disclosed. The connector structure includes a male connector and a female connector. A first and a second male connector fixing plastic portion are respectively disposed on both sides of the male connector, and a male connector insertion groove and a rubber sleeve groove are defined in each of the first and second male connector fixing plastic portions. A first bolt mounting hole is defined in each of the first and second male connector fixing plastic portions. A first fixing bolt is disposed to pass through the inside of the first bolt mounting hole. A rubber sleeve is sleeved on one end of the male connector, and a first wire is connected to one end of the male connector.