About Insoer Manufacturing
Premier manufacturer of high-quality washers and fasteners, serving global clients across Belt & Road Initiative countries with over $6M annual procurement volume and 200M+ units production capacity.
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Company Overview
Your trusted partner in precision manufacturing with 18 years of excellence
Insoer Manufacturing Co., Ltd
Located in Wenzhou, China
Insoer is a specialized manufacturer of high-quality washers and fasteners with 18 years of OEM/ODM production experience. We primarily serve brand owners, wholesalers, and retailers along the Belt and Road Initiative countries, with an annual procurement volume exceeding $6 million.
With advanced production equipment, skilled workforce, and strict quality control systems, we have become a trusted supplier in both domestic and international markets, providing comprehensive solutions from product design to large-scale production.
OEM/ODM Expertise
Specialized in custom manufacturing solutions
Global Reach
Serving Belt & Road Initiative markets
Key Statistics
Our Dedicated Team
Behind every precision-engineered product is our team of dedicated professionals. From skilled operators to quality control specialists, each team member brings years of experience and commitment to excellence.
Our Product Portfolio
Comprehensive range of precision-engineered washers and fasteners for construction, mining, heavy machinery, and automotive industries.
Download Product CatalogHigh-Strength Locking Washers
Engineered to enhance bolt durability and prevent loosening under high-stress conditions, suitable for heavy-duty applications.
- Spring steel construction for maximum resilience
- Anti-vibration properties for secure fastening
Butterfly Washers
Provides secure fastening with easy installation features, designed for applications requiring quick assembly and disassembly.
- Ergonomic design for hand-tight installation
- Multiple material and coating options
French Washers
Specifically designed for applications requiring high precision and strength, meeting stringent dimensional tolerances.
- Tight dimensional tolerances ±0.1mm
- Superior surface finish and hardness
Serrated & Bearing Rings
Enhanced grip and anti-vibration properties for critical mechanical assemblies and bearing applications.
- Internal/external serrated configurations
- Bearing retaining ring solutions
Competitive Advantages That Drive Your Success
18 years of manufacturing excellence, cutting-edge production capabilities, and unwavering commitment to quality make us your ideal partner for precision-engineered washers and fasteners.
Production Advantages
Advanced equipment and streamlined processes for unmatched efficiency
Advanced Equipment
30+ precision machines with automated production lines ensuring consistent quality and efficiency
High Capacity
Massive annual production capability across 8 specialized production lines
Fast Prototyping
Industry-leading rapid sampling service for quick product validation
Quick Mass Production
Seamless transition from prototype to full-scale manufacturing
Flexible Solutions for Every Need
Robust Supply Chain Excellence
Direct Material Sourcing from Tier-1 Mills
Strategic partnerships ensuring consistent quality and competitive pricing
300+ Metric Tons Safety Stock
Ready-to-ship inventory maintaining continuous supply capability
Stable Production Capacity
50+ skilled workers operating dual-shift production schedules
Price Stability Programs
Seasonal procurement planning to buffer material price fluctuations
Why Choose Insoer
Our comprehensive manufacturing capabilities and commitment to excellence make us the preferred partner for global fastener needs.
Manufacturing Scale
1,800㎡ modern production facility with 8 specialized production lines and 200M+ annual unit capacity.
Quality Assurance
ISO 9001 certified with three-stage quality control, ±0.1mm precision, and complete batch traceability.
Supply Chain Strength
Direct partnerships with primary steel mills, 300+ tons safety stock, and dual-shift production capability.
Customization Expertise
CAD-compatible mold manufacturing, multiple material options, and comprehensive surface treatment capabilities.
Global Clients & Partners
Construction Industry Leaders: Supplying high-strength fasteners for infrastructure projects across Belt & Road Initiative countries, ensuring structural integrity in demanding environments.
Mining Equipment Manufacturers: Providing specialized washers and fasteners for heavy-duty mining equipment, designed to withstand extreme operational conditions.
Automotive Component Suppliers: Delivering precision fasteners for automotive manufacturing, meeting stringent quality standards and production volumes.
Heavy Machinery OEMs: Supporting original equipment manufacturers with custom fastener solutions, from prototyping to mass production.
Ready to Start Your Project?
Contact our engineering team today for custom quotes, technical specifications, or to discuss your fastener manufacturing requirements.
Visit Our Factory
Wenzhou Industrial Zone, Zhejiang Province, China 325000