Gem AB glue is another name for two-liquid mixed hardening glue. One liquid is an adhesive and the other is a hardener. Only when two liquids are mixed can they become hard. It doesn't need temperature hardening, so it is a normal temperature hardening glue, sometimes used for modeling. Generally used in industry.
A component is acrylic acid modified epoxy resin or epoxy resin, or contains catalyst and other additives, and B component is modified amine or other curing agent, or contains catalyst and other additives. Mix in a certain proportion. Catalyst can control curing time, and other additives can control properties (such as viscosity, rigidity, flexibility, adhesion, etc. ). The properties of AB glue sold in the market are determined in the formula and generally do not change much. If there is a big change, it needs to be customized for the manufacturer.