Abstract: The present application relates to a chip, a preparation method therefor, and an application thereof. The chip of embodiments of the present application comprises: a substrate having a surface grafted with an amino group, the amino group being a primary amino group or a secondary amino group; and a first compound linked to the surface via the amino group, the first compound comprising the following structure, i.e., formula (1) or formula (2), wherein R1 and R2 are each independently selected from —OH or C1-C5 alkoxy, and n is 1 or 2. The chip can be used for a nucleic acid test, such as single-molecule sequencing and next-generation sequencing.

Abstract: A chip and a manufacturing method for the chip, comprising a weak passivation treatment following a fixing treatment. The weak passivation treatment comprises putting a weak passivation reaction solution containing a catalyst into contact with a chip for the fixing treatment, so as to promote a DNA or protein to bond with a substrate surface, thus allowing the DNA or protein to be fully fixed on the substrate surface. Moreover, on such basis, a small molecule or protein is added for manufacturing the chip.

Abstract: A CD-vinyl record player comprising a CD door, small turntable, bearing element, record player axle, mini-bearing, big turntable, record player main base, CD motor frame, turntable frame, CD main base, bearing, bearing cover, and CD motor. The CD door is connected to the small turntable through a mini-bearing, and the record player axle is installed in the center of the CD door. The bearing element is above the CD door and connected to the record player axle. The big turntable is above the record player main base. The bottom of the record player main base connects to the turntable frame. The CD motor frame is above CD main base. The bearing is at the center of record player main base, and has the bearing cover on top. The CD motor is at center of the bottom of the turntable frame. The invention combines a vinyl record player and CD player into one player.

Abstract: A CD-vinyl record player comprising a CD door, small turntable, bearing tablet, record axle, mini-bearing, big turntable, record player main base, CD engine frame, turntable frame, CD main base, bearing, bearing cover, and CD engine. The CD door is connected to the small turntable through a mini-bearing, and the record axle is installed in the center of the CD door. The bearing tablet is above the CD door and connected to the record axle. The big turntable is above the record player main base. The bottom of the record player main base connects to the turntable frame. The CD engine frame is above CD main base. The bearing is at the center of record player main base, and has the bearing cover on top. The CD engine is at center of the bottom of the turntable frame. The invention combines a vinyl record player and CD player into one player.