Classified by Source
Natural resin: Amorphous organic substances obtained from the secretions of animals and plants in nature, such as rosin, amber, cordyceps, etc.
Synthetic resin: A resin product obtained by chemical synthesis of simple organic compounds or chemical reactions of certain natural products, such as phenolic resin, polyvinyl chloride resin, etc.
Classified by synthetic reactions
Additive polymer: a polymer produced by addition polymerization reaction, whose chain structure has the same chemical formula as the molecular formula of the monomer, such as polyethylene, polystyrene, polytetrafluoroethylene, etc.
Polycondensates: Polymers produced by condensation polymerization reactions, whose structural units have different chemical formulas from the molecular formulas of monomers, such as phenolic resins, polyester resins, polyamide resins, etc.
Classified by molecular main chain composition
Carbon chain polymer: a polymer whose main chain is composed entirely of carbon atoms, such as polyethylene, polystyrene, etc.
Heterocyclic polymer: a polymer whose main chain is composed of atoms of two or more elements such as carbon, oxygen, nitrogen, sulfur, etc., such as polyoxymethylene, polyamide, polysulfone, polyether, etc.
Elemental organic polymer: The main chain may not necessarily contain carbon atoms, but is mainly composed of atoms of elements such as silicon, oxygen, aluminum, titanium, boron, sulfur, phosphorus, etc., such as organosilicon.
Classified by nature
Thermosetting resins: including unsaturated polyester, vinyl ester, epoxy, phenolic, bismaleimide (BMI), polyimide resin, etc. This type of resin undergoes cross-linking reaction after heating or adding curing agents, forming a three-dimensional network structure that is insoluble and cannot be softened by heating after curing.
Thermoplastic resins: such as polypropylene (PP), polycarbonate (PC), nylon (NYLON), polyether ether ketone (PEEK), polyether sulfone (PES), etc. It can soften during heating and harden during cooling, and can repeat this process repeatedly, with good plasticity and processability.
Classified by special functions
Toughened resin: A resin that improves its toughness and impact resistance by adding toughening agents. Common examples include modified polypropylene, modified polyamide, etc.
Special resin: a resin with special functions and properties, including high-temperature resistant resin, conductive resin, flame retardant resin, etc.
Classified by ion exchange characteristics
Cation exchange resin: containing acidic groups, it can exchange with cations in solution, and is divided into strong acidic cation resin and weak acidic cation resin.
Anion exchange resin: containing alkaline groups, it can exchange with anions in solution and can be divided into strong alkaline anion resin and weak alkaline anion resin.

Room termperature curing polysilazane, pls check IOTA 9150, IOTA 9150K. 
High termperature curing polysilazane, pls check IOTA 9108, IOTA 9118.