Guangzhou Top‑Service Trading Co., Ltd. (branded as TPSV) is a professional Chinese manufacturer and trading company specializing in the production and global distribution of excavator parts, hydraulic transmission components, and gear assemblies. Headquartered in Guangzhou, Guangdong, the company has gained a strong foothold in the heavy equipment aftermarket by delivering precise, high-durability components engineered to meet OEM specifications. ### Core Business TPSV focuses on designing, sourcing, and supplying heavy-duty mechanical parts tailored for excavators and construction machinery. The company’s business model combines in-house production capabilities with a vast network of verified component manufacturers, enabling it to fulfill custom and standard part requirements across a variety of international markets. ### Product and Service Offerings #### 1. Excavator Slewing Reducer Gears - High-precision rotation mechanisms for swing drives - Compatible with leading brands such as Hitachi, Komatsu, Doosan, and Volvo - Heat-treated gear surfaces and high-load resistance #### 2. Travel Reducer Gears - Planetary gear systems for crawler-type travel motors - Made with carburized steel and CNC machining for dimensional consistency #### 3. Reducers and Gear Assemblies - Custom reducer units - Bevel, planetary, and spur gears available in various module sizes - Assembly-level testing for rotational torque and backlash tolerance #### 4. Hydraulic Motor Bearings - Radial and thrust bearings engineered for heavy-load hydraulic motors - High-performance sealing systems and anti-friction coatings #### 5. Final Drive Parts - Planetary Carriers - Sun Gears - Ring Gears - Gear Pins - Hub Housing - Seal Kits These components support excavator final drives ranging from 3 to 50 tons, suitable for OEM and aftermarket applications. ### Specialization and USP - OEM Precision: Components manufactured to match original specifications for seamless replacement - Wide Compatibility: Support for over 500 excavator models across 30+ brands - On-Demand Customization: CAD/CAM capability for client-specific gear modifications - End-to-End Quality Control: Every part undergoes hardness testing, metallographic analysis, and tolerance validation - Rapid Fulfillment: Inventory of over 1,500 SKUs in warehouse enables next-day dispatch for core parts ### Financials As a mid-scale enterprise operating in China’s mechanical parts export sector: - Annual revenue estimate: USD 8–12 million - Export markets: Southeast Asia, Latin America, Eastern Europe, Africa - Repeat order rate: Over 65%, based on internal sales data - OEM and aftermarket client mix: 30% OEM-aligned, 70% independent aftermarket distributors ### Shipment and Trade Facilitation According to export tracking data: - Over 400 international shipments between 2020–2024 - Major destinations: Indonesia, Brazil, Nigeria, Vietnam, Russia - Most shipped products: Slewing gearboxes, planetary gears, ring gears, and bearing kits - Shipment formats: Custom-crated pallets, corrosion-resistant vacuum sealing, container load consolidation TPSV operates via FOB Guangzhou and Shenzhen ports with full Incoterms coverage. ### Target Market - Construction equipment maintenance companies - Heavy machinery distributors and dealers - Excavator fleet operators - OEMs seeking outsourcing of precision gear components - Hydraulic repair and rebuild workshops TPSV serves both bulk distributors and retail-level buyers through direct sales and B2B e-commerce platforms. ### Capabilities - CNC turning and milling centers with ±0.01 mm tolerance precision - CAD/CAM modeling for gear simulation and optimization - Heat treatment and carburization lines for gear durability enhancement - In-house dimensional and hardness testing lab - Packaging lines optimized for international export standards ### Certifications and Compliance - ISO 9001:2015 certified quality management system - RoHS-compliant materials for specific clients - Meets CE and SGS inspection standards for parts exported to the EU - Custom clearance documentation: CO, Form E, Form FTA for ASEAN and Latin America ### Customer Testimonials > “TPSV’s gear quality and price competitiveness helped reduce our rebuild downtime by 30%. Their packaging and after-sales support are exceptional.” > — Luis E., Maintenance Manager, CivilEquip Peru > “Reliable source for hydraulic parts in our Doosan and Komatsu units. Very responsive and technically sound team.” > — Bùi T., Owner, Mekong Equip Co., Vietnam ### Major Achievements - Over 100,000 reducer and gear components exported since 2018 - Recognized by multiple Alibaba Gold Supplier awards for export excellence - Supplier to several UN-funded infrastructure project contractors in Africa - Developed proprietary gear sets compatible with discontinued OEM models - Featured supplier in China’s Bauma Construction Machinery Expo Guangzhou Top‑Service Trading Co., Ltd. continues to empower the global heavy equipment industry with reliable, precision-engineered mechanical parts and responsive, tech-savvy customer service. With strong manufacturing alliances and expanding international outreach, TPSV is set to become a benchmark supplier in the construction machinery parts sector.
