Resin Keychain Knuckle Duster Pendant Defense Color:Amber Color Closed length: 100 mm

Closed length: 100 mm

Product weight: 38g

unfolded length 14

steel chain Buckle Stick body: 20

Resin Keychain Knuckle Duster Pendant Defense Color:Amber Color Closed length: 100 mmEpoxy resin is a general term for a class of polymers containing more than two epoxy groups in the molecule. It is the condensation product of epichlorohydrin and bisphenol A or polyol. Due to the chemical activity of the epoxy group, a variety of compounds containing active hydrogen can be used to make it ring opening, curing and crosslinking to generate a network structure, so it is a thermosetting resin. Bisphenol A type epoxy resin has the largest