1. Organotin Intermediates (Synthesis Platform) ⚗️:
The core application is the preparation of dibutyltin dilaurate (DBTDL), dibutyltin diacetate (DBTA), butyltin thiolates, etc., through hydrolysis, alcoholysis, and metathesis; typical fields: catalysts, stabilizers, antifouling agents, pharmaceutical/pesticide/additive intermediates; key points: highly corrosive and hydrolytic, requiring anhydrous/inert atmosphere, acid-resistant equipment, strict temperature control, and exhaust gas absorption.

2. Polyurethane (PU) Crosslinking/Curing Catalyst 🧪:
Catalyzes the urethane reaction of isocyanates and polyols, accelerating gelation and curing; typical systems: two-component PU coatings/adhesives/sealants, elastomers, soft/rigid foams, one-component moisture-curing PU; key points: dosage 0.05%–0.15% (based on polyol), temperature control to prevent scorching, can be compounded with amines to adjust gelation/foaming balance.

3. Room Temperature Vulcanizing (RTV) Silicone Rubber/Silicone Sealant Curing Catalyst 🧩:
Catalyzes silanol condensation, accelerating surface drying and curing of alcohol-releasing/oxime-releasing/acetic acid-releasing RTVs; typical products: silicone sealants for construction/automotive/electronics, potting compounds, molding compounds; key points: often compounded with other organotins or retarders to reduce odor and control curing rate, suitable for room temperature application.

4. PVC Heat Stabilizer (mainly for flexible/semi-rigid PVC) 🎞️:
Inhibits HCl degradation, improves high-temperature processing stability and initial coloration, while also providing lubrication and transparency; typical products: flexible PVC films, heat shrink films, hoses, artificial leather, cable compounds; often used as an auxiliary stabilizer/lubricant in rigid PVC, compounded with main stabilizers to optimize processing window and flowability; key points: dosage and compatibility require small-scale testing.

5. Transesterification / Esterification / Condensation Reaction Catalysts (Organic Synthesis) ⚗️:
Used in transesterification, esterification, silane polycondensation, and synthesis of polyester/polycarbonate raw materials; typical applications: synthetic lubricants, plasticizers, antioxidants; key features: high activity, fast reaction rate, suitable for continuous and batch processes.

6. Silane Cross-linked Polyolefin (XLPO/XLPE) Catalysts ⚙️:
Catalyzes silane grafting and hydrolysis condensation, improving the high-temperature resistance, crack resistance, and mechanical properties of pipes and cable sheaths; typical applications: underfloor heating pipes, cross-linked polyethylene pipes for water supply, cable insulation/sheathing; key features: low dosage, high efficiency, suitable for extrusion and hot water/irradiation cross-linking processes.

7. Anti-corrosion / Anti-fouling (Restricted Use) 🛡️:
Marine antifouling coatings, wood preservatives, anti-rodent coatings for cables; typical scenarios: hull antifouling, outdoor wood protection; key features: strong aquatic toxicity and bioaccumulation, strict adherence to environmental regulations regarding restricted use, prioritize alternative products.