Introduction: The Importance of Supplier Evaluation in Manufacturing

In modern manufacturing, supplier evaluation is an indispensable element for maintaining and enhancing a company’s competitiveness. As global supply chains become increasingly complex, risks related to quality, cost, and delivery are continuously growing. Notably, Vietnam’s manufacturing industry has experienced remarkable growth in recent years, with its manufacturing GDP growth rate reaching approximately 6.9% in 2023 (General Statistics Office of Vietnam). Amidst this boom, selecting and developing local suppliers is a critical challenge for Japanese manufacturing sites to meet the demands for high quality, low cost, and stable supply.

Supply chain disruptions can potentially lead to losses of several hundred million yen annually for companies, and increased costs due to defective products are estimated to account for 5-10% of manufacturing costs (Ministry of Economy, Trade and Industry). To mitigate such risks and build a resilient supply chain, an objective and multifaceted evaluation is required for all suppliers, including those providing critical components like fasteners. Ohta Vietnam leverages its extensive experience and local network to support clients in building stable supply chains.

Evaluation Indicator 1: Ensuring Unwavering Quality

In supplier evaluation, “quality” is the most fundamental aspect. Product quality directly impacts the performance, safety, and brand image of the final product, leaving no room for compromise. Especially for fasteners, strict control over dimensional accuracy (e.g., within ±0.05mm), material, and surface treatment is essential.

• Product Quality: Evaluate accuracy, functionality, and durability as per drawings. The target defect rate should aim for 100 ppm (Parts Per Million) or less.
• Process Quality: Standardization of manufacturing processes, process control, and establishment of inspection systems are crucial. Verify the presence and operational status of certifications such as ISO 9001 (international standard for quality management systems), with over 80% of key suppliers ideally holding such certifications. Aim for an inspection pass rate of 99.5% or higher.
• Commitment to Quality Improvement: Assess the proactiveness in root cause analysis and recurrence prevention measures for defects, as well as continuous improvement activities (Kaizen). Efforts to keep the number of customer complaints below X per year are expected.

Fostering a quality culture among Vietnamese suppliers is vital for bridging the gap with the high-quality standards demanded by Japanese companies. Ohta Vietnam provides support in closing this gap through quality audits and technical guidance for local suppliers.

Evaluation Indicator 2: Optimizing Price for Competitive Advantage

Alongside quality, “price” significantly influences a company’s competitiveness. It is crucial to select suppliers who not only offer competitive pricing but also demonstrate transparent cost structures and continuous efforts toward cost reduction.

• Cost Structure Transparency: Request disclosure of breakdowns for raw material costs, processing costs, and indirect costs, and analyze cost composition ratios (e.g., raw materials 50%, processing 30%) to determine price fairness.
• Price Competitiveness: Evaluate whether prices are appropriate by comparing them with market prices and competitors’ quotes. Set an annual cost reduction target of X% and aim to achieve it through collaboration with suppliers.
• Cost Reduction Proposals: Evaluate proactive proposals from suppliers, such as VA/VE (Value Analysis/Value Engineering) suggestions, cost reductions through productivity improvements, and lot size optimization. Annual savings from price negotiations can sometimes reach X million yen.

Labor costs in Vietnam still offer an advantage compared to neighboring countries, but an average annual increase of 5-10% is observed (JETRO). It is necessary to formulate a long-term cost optimization strategy, taking into account fluctuating factors such as electricity prices.

Evaluation Indicator 3: Delivery Reliability Supporting Production Plans

Delivery reliability is paramount for ensuring adherence to production plans and stable supply to customers. Delivery delays directly lead to production line stoppages and lost opportunities, thus a supplier’s ability to meet delivery deadlines must be rigorously evaluated.

• On-time Delivery Rate: Based on past performance data, aim for an on-time delivery rate of 98% or higher.
• Lead Time: Evaluate the period from order receipt to delivery (average lead time of X days), also considering possibilities for reduction and flexibility.
• Production Capacity and Flexibility: Assess the ability to respond to sudden increases in production or specification changes, and production capacity utilization (e.g., 80% or more). Visibility and sharing of production plans are essential for stable supply.
• Logistics and Inventory Management: Verify the supplier’s logistics system, inventory management system, and emergency response plans. While Vietnam’s port container throughput is growing at an average annual rate of X%, it is crucial to consider infrastructure conditions and customs clearance procedures that pose logistics delay risks, and to confirm alternative routes and emergency order fulfillment records (Y successful out of X cases).

Evaluation Indicator 4: Technical and Development Capabilities for Future Growth

A supplier’s technical and development capabilities hold the potential to contribute to product differentiation and the creation of new value. It is important to view them not merely as a manufacturing contractor but also as a technical partner.

• Processing and Manufacturing Technologies: Evaluate capabilities in special processing, precision machining, and handling new materials. For fasteners, this includes high-strength, lightweighting, and special surface treatment technologies.
• Design and Development Support Capabilities: Assess the ability to contribute to customer problem-solving, such as drawing creation support, prototype development, and VA/VE proposals. Suppliers with a technical proposal adoption rate of X% demonstrate a high level of contribution.
• Problem-Solving Ability: Evaluate the ability to propose solutions for technical challenges, rapid response, and improvement cycles.
• R&D Investment: Confirm R&D investment ratio (X% of sales), number of patents/utility models acquired annually (X cases), and ratio of engineers (X% of employees) to gauge commitment to future technological innovation.

In Vietnam, technology transfer is progressing, with X hundred thousand technical university graduates annually (General Statistics Office of Vietnam). The development and utilization of local engineers are also key evaluation points.

Evaluation Indicator 5: Business Stability and Risk Management for Sustainability

A supplier’s business stability and risk management system are essential for maintaining long-term business relationships. It is necessary to minimize the risk of supply disruption in the event of unforeseen circumstances.

• Financial Soundness: Verify equity ratio (benchmark of 30% or more), current ratio, and trends in sales and profit to assess the presence of a stable management foundation. Confirm healthy growth, such as an average annual sales growth rate of X%.
• Business Continuity Plan (BCP): Evaluate response plans for disasters or pandemics, and the existence and effectiveness of alternative production systems. A BCP formulation rate of 100% is desirable.
• Environmental, Social, and Governance (ESG): Assess initiatives for sustainable management, including reducing environmental impact, ensuring appropriate labor conditions, legal compliance, and human rights considerations across the entire supply chain. ESG evaluation scores from third-party organizations can also be referenced.
• Information Security: Verify the establishment and operational status of information security systems, and evaluate factors such as whether the number of annual information security incidents is X or less.

Compliance with legal regulations and labor environment standards in Vietnam is a particularly important evaluation item for Japanese companies (EY Japan).

Practical Approaches for Successful Supplier Evaluation

To effectively utilize these evaluation indicators, a systematic approach is required. Let’s build strong partnerships with suppliers and aim to strengthen the entire supply chain.

• Clarification and Sharing of Evaluation Criteria: It is crucial to agree on evaluation items, methods, and target values with suppliers in advance to establish a common understanding.
• Regular Evaluation and Feedback: Conduct annual evaluations at least once a year and provide feedback to suppliers on the results. Jointly develop improvement plans and regularly review their progress (e.g., monthly meetings).
• Collaboration with Suppliers: Build long-term partnerships and promote joint problem-solving and technical exchange. Conduct supplier satisfaction surveys and aim for an average score of X or higher to strengthen relationships.
• Multifaceted Information Gathering: Collect information from various perspectives, such as on-site audits, performance data analysis, and utilization of third-party evaluations, to enhance the objectivity of the assessment.

Ohta Vietnam strongly supports your supplier evaluation process through local supplier development and evaluation assistance, quality audits, technical guidance, and interpretation support. This enables clients to achieve stable procurement in Vietnam and reduce business risks.

Summary: Ohta Vietnam’s Path to Stable Procurement

This article has explained the importance of supplier evaluation in manufacturing and the five key evaluation indicators: quality, price, delivery, technical and development capabilities, and business stability and risk management. A systematic evaluation based on these indicators is essential for managing risks within global supply chains and supporting a company’s sustainable growth.

Supplier selection and development in Vietnam can be challenging due to differences in language, culture, and business practices. Ohta Vietnam leverages its expertise cultivated over many years and its robust local network to overcome these challenges. With a track record of supporting over X Japanese companies and partnering with more than Y Vietnamese suppliers, Ohta Vietnam’s Z local staff members strongly support the stable procurement of manufacturing components, including fasteners.

We are dedicated to strongly supporting our clients’ manufacturing activities in Vietnam and contributing to the strengthening of their supply chains, thereby helping their businesses achieve greater stability and growth. Please do not hesitate to consult Ohta Vietnam.

Conclusion

For inquiries regarding samples or materials, please respond to this email or contact our sales representative!

At Ohta Vietnam, we not only provide ready-made products such as screws and bolts, but also support activities in the manufacturing field such as cutting, inspection, assembly, packaging…
Our equipment list is here

As a “specialized support” for the manufacturing industry in Asia. If you have any related questions, feel free to contact Ohta Vietnam for detailed support!
URL: https://ohtavn.com/en/contact/

List to Column page