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[product name] hydrogel paste[Specifications] specifications 3.0cm × 3.0cm - 30.0cm × 30.0cm;Special specifications: Made according to customer requirements within the standard range.[Structural Performance] This product consists of a patch and a mucous membrane. The patch consists of a backing layer and a gel layer. The backing layer of the patch is made of a non-woven fabric. The gel layer of the patch consists of menthol,Website:http://www.chenxingyiliao.com, water, and high molecular subs