Please select the most similar patent number from A, B, C and D. Which number is?
A novel silica gel powder puff, comprising a first silica gel layer (1) and a second silica gel layer (2). The first silica gel layer (1) is coated by a first outer thin film layer (3) and a first inner thin film layer (4); the second silica gel layer (2) is coated by a second outer thin film layer (5) and a second inner thin film layer (6); a part of the edge of each coating film layer of the first silica gel layer (1) and the second silica gel layer (2) is bonded; openings (7) are provided at one or two ends to form a cavity (8) between the first silica gel layer (1) and the second silica gel layer (2); the cavity is used for receiving a finger or a handle, thereby facilitating holding. The operations are simple, flexible and easy, and the makeup efficiency is improved.
A: A novel silica gel powder puff, comprising a silica gel body (1) prepared from silica gel. The silica gel body (1) has an arc-shaped use surface (2); the arc-shaped use surface (2) is provided with a protruding area (3) which is partially protruded out of the arc-shaped use surface (2) in an eccentric position; the arc-shaped use surface (2) and the protruding area (3) both consist of a silica gel matrix (4) and silica gel fluff (5) intensively provided on the silica gel matrix (4). The powder puff is made of a silica gel material, so that the powder puff can be repeatedly cleaned, and the hygiene problem caused by residue of paste is avoided; the powder puff is safe to use, has high adhesion and convenience, and can be designed into various shapes according to different requirements.
B: Provided are a silica gel vertical-cotton pillow core, a preparation method therefor, and a pillow. The silica gel vertical-cotton pillow core comprises a vertical-cotton pillow core body (3), wherein a first groove and a first silica gel layer (1), arranged in the first groove and engaged with the first groove, for having the head of a user placed therein are provided on one side of the pillow core body, and the first silica gel layer and the vertical-cotton pillow core body are detachably arranged; and a second groove and a second silica gel layer (2), arranged in the second groove and engaged with the second groove, for having the head of the user placed therein are provided on the other side of the pillow core body, and the second silica gel layer and the vertical-cotton pillow core body are detachably arranged. The silica gel layers comprise a bladder body and a silica gel filled in the bladder body, and the bladder body is formed by hot-pressing two thin films along the periphery thereof. The silica gel vertical-cotton pillow core uses a combination of silica gel and vertical-cotton, has soft and skin-friendly properties that ordinary pillow cores do not have, and has better chemical stability, rebound resilience and breathability than ordinary pillow cores.
C: Disclosed is a silica gel-coated glass container, comprising a main glass container body, wherein the main glass container body comprises a bottle body (1), a bottleneck (2) integrally connected to the upper side of the bottle body (1), and a bottle bottom (3) integrally connected to the lower side of the bottle body (1); an accommodating chamber (4) is formed in the bottle body (1); the bottleneck (2) has an opening (5) running vertically through the accommodating chamber (4); connection threads (6) are formed on an outer surface of the periphery of the bottleneck (2); an outer surface of the bottle body (1) and an outer surface of the bottle bottom (3) are completely covered by an integrated silica gel layer (7); the silica gel layer (7) is formed by impregnation and is fixed to the outer surface of the bottle body (1) and the outer surface of the bottle bottom (3); and the outer surface of the bottleneck (2) is not covered by the silica gel layer (7). Thus, the glass container has the advantages of slip resistance, heat insulation, breakage resistance and the like, and effectively solves the problems that a traditional glass container will easily slip, is hot and will easily break when being used, and that broken glass is scattered everywhere. Moreover, the glass container is simple in structure, easy to produce and manufacture, and suitable for popularization and application.
D: A light emitting diode phototherapy belt (8), comprising a non-transparent silica gel layer (2), a transparent silica gel layer (5), and a flexible circuit board (4). The non-transparent silica gel layer (2) and the transparent silica gel layer (5) are bonded together at the periphery so that the flexible circuit board (4) is wrapped between the non-transparent silica gel layer (2) and the transparent silica gel layer (5); multiple light emitting diodes (41) are welded on one side of the flexible circuit board (4), the side of the flexible circuit board (4) where the light emitting diodes (41) are welded abuts against the transparent silica gel layer (5), and the other side of the flexible circuit board (4) abuts against the non-transparent silica gel layer (2); the non-transparent silica gel layer (2) is provided with an opening (21), and the opening (21) is communicated with the flexible circuit board (4) so that a control device (7) is inserted into the opening (21) and then electrically connected to the flexible circuit board (4). Accordingly, also provided is a light emitting diode phototherapy device. The phototherapy device is water-proof, easy to clean, and of no sensitization risk when exposed to human skin.
Answer: A