Abstract: Disclosed are reactive dyes and preparation methods thereof. The reactive dye may be prepared using heterocyclic primary amine as a diazo component, 4,4?-diamino-2,2?-stilbenedisulfonic acid, s-triazine, or ethylenediamine as a bridging group, and a dimonochlortriazine group as an active group. The color-changing compound is covalently bonded into the fiber chemical structure by nucleophilic substitution reaction between monochlorotriazine and the hydroxyl group in a textile structure, and the size of the conjugated system and the range of electron delocalization of the dye are changed by a reversible isomerization reaction of the hydroxyl group adjacent to the diazo group and the diazo group under different pH regulations. Moreover, the dye has a double color changing structure, which improves the capability of the dye combined with —H/—OH. The pH value range that can cause color changes in the dye is effectively expanded to include weak alkali, weak acid or even neutral conditions.

Abstract: An assembled plastic pallet is provided in the disclosure, which includes a panel and a plurality of support legs detachably arranged at a lower side of the panel. A metal reinforcement is embedded in the panel, each of the plurality of support legs is in a cuboid, four sides of each of the plurality of support legs is recessed inward to form a first groove, four sides of each of the plurality of support legs is formed with a reinforcing rib, and the reinforcing rib is smoothly transitioned to a bottom of the first groove with an arc. An assembled plastic pallet provided in this disclosure can be freely assembled as required and has high bearing capacity.

Abstract: A scannable code is used to facilitate copy and paste of content, wherein context information associated with the content is serialized and encoded directly into the scannable code. When the scannable code is decoded, the content is pasted into a desired location in a manner that is consistent with the context information.

Abstract: A scannable code is used to facilitate copy and paste of content, wherein context information associated with the content is serialized and encoded directly into the scannable code. When the scannable code is decoded, the content is pasted into a desired location in a manner that is consistent with the context information.

Abstract: A scannable code is used to facilitate copy and paste of content, wherein context information associated with the content is serialized and encoded directly into the scannable code. When the scannable code is decoded, the content is pasted into a desired location in a manner that is consistent with the context information.

Abstract: A scannable code is used to facilitate copy and paste of content, wherein the content is serialized and encoded directly into the scannable code along with context information. When the scannable code is decoded, the content is pasted into a desired location in a manner that is consistent with the content information.

Abstract: A scannable code is used to facilitate copy and paste of content, wherein the content is serialized and encoded directly into the scannable code along with context information. When the scannable code is decoded, the content is pasted into a desired location in a manner that is consistent with the content information.