About Insoer
18 Years of Excellence in Precision Fastener Manufacturing
Located in Wenzhou, China, we are a trusted OEM/ODM manufacturer specializing in high-quality washers and fasteners, serving global brands along the Belt and Road Initiative with over $6M annual procurement volume.
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 Story: 18 Years of Excellence
From a small workshop to a leading manufacturer serving global markets along the Belt and Road Initiative.
Foundation & Early Years
Established in Wenzhou with a vision to manufacture premium washers and fasteners. Started with basic equipment and a team of 5 dedicated craftsmen, focusing on local market needs.
Growth & Expansion
Rapid expansion phase with investment in advanced machinery and ISO 9001 certification. Expanded to 1,800㎡ facility with 8 production lines and established quality control systems.
International Market Entry
Strategic expansion to Belt and Road markets, establishing partnerships with international brands. Achieved $6M+ annual procurement volume and developed OEM/ODM capabilities.
Current Status & Future Vision
Today we produce 200M+ pieces annually with 50+ skilled workers and 30+ advanced machines. Leading innovation in precision manufacturing while expanding sustainable production practices.
Our Mission
To deliver precision-engineered washers and fasteners that exceed international quality standards, empowering our global partners with reliable solutions that drive their success in critical applications.
Core Values
Quality Excellence
Uncompromising commitment to precision and reliability
Customer Partnership
Building long-term relationships through trust and service
Innovation Drive
Continuously advancing manufacturing capabilities
Global Responsibility
Supporting sustainable development worldwide
Future Vision
To become the leading global manufacturer of specialized fasteners, expanding our Belt and Road presence while pioneering smart manufacturing and sustainable production technologies.
Advanced Manufacturing Capabilities
State-of-the-art facilities and precision equipment delivering consistent quality at scale with 18 years of manufacturing expertise.
Production Facility
Our modern manufacturing facility spans 1,800㎡ with specialized production lines designed for maximum efficiency and quality output.
Modern production facility with optimized workflow design
Dedicated production lines for different product categories
High-precision automated equipment for consistent quality
Annual production capacity with scalable operations
Facility Highlights
Dual-Shift Operations
50+ skilled workers ensuring 24/7 production capability
Climate Controlled Environment
Optimal conditions for precision manufacturing
Safety Stock Warehouse
300+ metric tons ready-to-ship inventory
Quality Control Laboratory
In-house testing facilities with certified equipment
Technical Equipment
Precision Stamping Machines
High-tonnage stamping presses with advanced tooling systems for complex washer geometries and consistent dimensional accuracy.
Automated Production Lines
Fully integrated assembly lines with robotic handling, reducing human error and ensuring consistent production speed and quality.
CNC Control Systems
Advanced computer numerical control maintaining ±0.1mm precision tolerance across all manufacturing processes and quality checkpoints.
Testing Equipment
Comprehensive inspection tools including coordinate measuring machines, material testing apparatus, and surface finish analyzers.
Production Process
Raw Material Selection
Sourcing premium materials from tier-1 suppliers with certifications. Incoming inspection ensures material compliance with specifications.
Precision Manufacturing
CNC-controlled stamping and forming processes with real-time monitoring. Automated quality checks at each production stage.
Quality Testing
Three-stage inspection protocol with dimensional verification, surface finish analysis, and performance testing before approval.
Packaging & Delivery
Custom packaging solutions with batch traceability. Logistics coordination for global shipping with delivery confirmation.
Uncompromising Quality Standards
Our comprehensive quality assurance system ensures every washer and fastener meets the highest international standards through rigorous inspection processes and certified quality control procedures.
Quality Standards & Certifications
Committed to excellence through internationally recognized quality management systems and industry-specific compliance standards.
ISO 9001 Certification
Certified quality management system ensuring consistent production processes, continuous improvement, and customer satisfaction across all operations.
International Quality Standards
Adherence to ASTM, DIN, and JIS standards ensuring global compatibility and performance reliability for diverse international markets.
Industry-Specific Compliance
Specialized compliance for construction, automotive, mining, and heavy machinery industries with sector-specific testing protocols.
Quality Metrics
Certification Timeline
Three-Stage Inspection Process
Our comprehensive quality control system implements rigorous inspection at every stage, from raw materials to final delivery, ensuring zero-defect production.
Raw Material Inspection
Comprehensive material verification including chemical composition analysis, mechanical properties testing, and dimensional accuracy checks before production begins.
In-Process Quality Control
Real-time monitoring during production with dedicated QC personnel on each line performing continuous dimensional checks and process parameter validation.
Final Product Inspection
Comprehensive final inspection including visual examination, dimensional verification, functional testing, and packaging quality checks before shipment.
Expert Quality Control Team
Our dedicated quality control professionals bring years of experience and specialized expertise to ensure every product meets our exacting standards.
Each Line QC Specialist
Every production line is staffed with dedicated quality control personnel ensuring continuous monitoring and immediate issue resolution.
Advanced Quality Features
State-of-the-art quality management systems providing complete traceability, precision control, and comprehensive documentation.
Precise Tolerances: ±0.1mm
Advanced CNC control systems maintain exceptional precision with tolerances within ±0.1mm for all critical dimensions.
Complete Traceability System
Comprehensive tracking from raw material source through production to final delivery with digital documentation.
Batch Number Tracking
Every product carries unique batch identification enabling rapid issue resolution and quality analysis across production runs.
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.
18 Years of OEM/ODM Excellence
Nearly two decades of specialized manufacturing experience serving global brands along the Belt and Road Initiative, with deep expertise in precision engineering and quality assurance.
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
Uncompromising Quality Standards
Our commitment to excellence is backed by rigorous quality control processes, international certifications, and experienced quality assurance professionals.
Strict Quality Control
Three-stage inspection process: raw materials → production → shipping with ±0.1mm precision tolerance
ISO Standards Compliance
Full compliance with ISO 9001 quality management systems and international standards
Experienced QC Team
Dedicated quality control professionals with 5+ years experience on each production line
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
Your Trusted Manufacturing Partner
18 years of proven excellence in precision manufacturing, serving global brands with unmatched quality and reliability.
18 Years Proven Track Record
Established expertise in OEM/ODM manufacturing with consistent quality delivery
$6M+ Annual Business Volume
Trusted by global brands across Belt and Road Initiative markets
One-Stop Solution Provider
From design consultation to mass production and quality control
Strict Quality Control
±0.1mm precision with ISO 9001 certified three-stage inspection
Flexible Customization
Multiple materials, surface treatments, and CAD-compatible design
Fast Delivery
24-hour sampling, 3-day mass production with 300T safety stock
Competitive Pricing
Direct sourcing from tier-1 suppliers with stable pricing strategy
Our Value Proposition
We don't just manufacture washers and fasteners – we engineer reliability, deliver precision, and build lasting partnerships that drive your business forward.
Risk-Free Partnership
Start with 500-piece trial orders, scale to millions with consistent quality and pricing stability
Speed-to-Market Advantage
Reduce your product development cycle with our rapid prototyping and engineering support
Supply Chain Reliability
300T safety stock and dual-shift production ensure your orders are always fulfilled on time
Why Global Brands Choose Insoer
Customer Success Stories
Heavy Machinery Manufacturer
Belt & Road Initiative Market
"Insoer's high-strength lock washers solved our vibration loosening issues in mining equipment. Their 24-hour sampling service helped us meet critical project deadlines."
Automotive Parts Distributor
Southeast Asia Region
"The custom butterfly washers with Dacromet coating exceeded our corrosion resistance requirements. Insoer's engineering team provided excellent technical support throughout the project."
Construction Equipment Brand
Middle East & Africa
"From 500-piece trials to 800K+ monthly orders, Insoer scaled with our business growth while maintaining consistent quality and competitive pricing."
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From rapid prototyping to mass production, we deliver precision-engineered solutions backed by 18 years of manufacturing excellence and ISO 9001 quality assurance.