Fujian Wanlong Diamond Tools Co., Ltd. Supplier Evaluation
Executive Summary
Fujian Wanlong Diamond Tools Co., Ltd. is a China-based supplier located in Fujian, with reported factory scale of 28,000+ m2 and 880+ staff. The company presents strong manufacturing capacity for diamond and abrasive tools, including resin abrasive tools, metal bond grinding discs, granite abrasive resin fickerts, calibration wheels, and diamond calibration rollers. Its platform credibility is strong, supported by 23 years as a Gold Supplier, Trade Assurance availability, verified supplier status, Finished Product Inspection, warranty availability, minor customization, and ODM service availability. Commercial performance is moderate: the supplier reports 20+ orders and CN¥270.4K+ transaction value over the past six months, but customer feedback is limited, with a 3.6 store rating and only 2 reviews. Delivery performance is strong with a 100.0% on-time dispatch rate. Overall, this supplier appears suitable for buyers seeking established production capacity and platform-backed sourcing, but quality validation should be handled carefully due to limited review volume and modest store rating.

Detailed Analysis
1. Company Strength
Basis
- Factory location: Fujian, China
- Factory area: 28,000+ m2
- Employees: 880+ staff
- Verified supplier / factory inspection status: True
- Product scope provided: abrasive tools, grinding discs, resin fickerts, calibration wheels, diamond calibration rollers
Elaboration
The supplier demonstrates a substantial physical and labor base, with a factory area exceeding 28,000 m2 and more than 880 employees. This indicates a relatively large production organization rather than a small trading-style operation. The presence of verified supplier status further strengthens the company profile, as it provides a platform-level indication that the supplier has undergone some form of verification.
The product data also shows coverage across multiple diamond and abrasive tool categories, including both lower-MOQ consumable products and higher-value calibration rollers. This suggests the supplier is positioned toward industrial stone, granite, quartz, or abrasive-processing applications based strictly on the listed product names.
Scoring Rationale
The company’s reported factory size and workforce are both strong indicators of large-scale supply capability. The verified supplier status supports operational credibility. Although the data does not provide detailed production line count, annual output, machinery list, or specific factory audit report details, the available scale indicators are sufficient to classify the company as a large and stable supplier.
Final Score
19 / 20
2. Platform & Compliance Credibility
Basis
- Gold Supplier: True
- Gold Supplier duration: 23 years
- Trade Assurance: True
- Verified supplier: True
- Certification / platform labels: Warranty available, Finished Product Inspection, Minor customization, ODM service available
Elaboration
The supplier has a very long Gold Supplier history of 23 years, which is a strong platform credibility indicator. Trade Assurance availability adds transaction protection for buyers using the platform. The company also carries several useful platform labels, including warranty availability and Finished Product Inspection.
The available labels indicate a relatively complete -facing compliance and service profile. However, no independent third-party certifications such as ISO, CE, or industry-specific certificates are provided in the supplied data, so these cannot be credited.
Scoring Rationale
A 23-year Gold Supplier record, Trade Assurance support, verified supplier status, and multiple operational labels represent a strong platform credibility package. The score is near the top of the range because the supplier has long-term platform presence and transaction protection. A perfect score is justified within the provided platform-based criteria, although non-platform certifications remain Insufficient Data.
Final Score
20 / 20
3. Business Performance
Basis
- Orders in the past six months: 20+
- Transaction value in the past six months: CN¥270.4K+
- Store rating: 3.6
- Number of reviews: 2
Elaboration
The supplier has recorded commercial activity, with more than 20 orders and more than CN¥270.4K in transaction value over the past six months. This confirms that the supplier has recent marketplace transaction history rather than no visible activity.
However, the store rating of 3.6 is not strong, and the review count is very limited at only 2 reviews. The low review base reduces confidence in using the rating as a stable indicator of buyer satisfaction. The order and transaction figures show some market validation, but they do not indicate high-volume marketplace performance.
Scoring Rationale
The supplier has measurable recent transactions, but the business performance profile is mixed. The transaction amount is moderate, while the number of orders is not high. More importantly, the store rating and review count weaken commercial confidence. Because buyer feedback is sparse and the rating is below what would normally be considered strong, the supplier should not be scored in the high-performance range.
Final Score
12 / 20
4. Service Capability
Basis
- Response time: ≤4h
- Customization-related labels: Minor customization, ODM service available
- Full Customization: Insufficient Data
Elaboration
The supplier reports a response time of no more than four hours, which indicates acceptable communication speed for general procurement inquiries. The presence of minor customization and ODM service labels suggests the supplier can support some level of product adaptation or development service.
However, the data does not state that the supplier supports Full Customization. Therefore, the customization capability should be treated as partial rather than comprehensive. No information is provided on multilingual support, engineering response process, sample lead time, or dedicated account management.
Scoring Rationale
The response time is reasonable but does not meet the strongest service benchmark of one hour or less. The supplier shows customization capability through minor customization and ODM service availability, but Full Customization is not confirmed. This supports a mid-to-good service score rather than a top-tier score.
Final Score
7 / 10
5. Delivery Performance
Basis
- On-time dispatch rate: 100.0%
Elaboration
The supplier reports a 100.0% on-time dispatch rate, which is the strongest delivery indicator available in the provided data. This suggests that, for recorded platform transactions, the supplier has maintained timely shipment performance.
No additional delivery data is provided regarding average lead time, production cycle, logistics partners, export documentation capability, or historical delay cases. Therefore, the delivery evaluation is based strictly on the on-time dispatch rate.
Scoring Rationale
According to the scoring standard, an on-time dispatch rate above 90% qualifies for 9 to 10 points. Since the supplier reports 100.0%, the delivery performance reaches the highest band. The score is therefore full within this dimension.
Final Score
10 / 10
6. Quality & Customer Feedback
Basis
- Store rating: 3.6
- Review count: 2
- Finished Product Inspection: Available
- Verified supplier / factory inspection status: True
- Warranty available: Yes
- Factory Verification: Supported by provided verified supplier / factory inspection status
- Independent quality certifications: Insufficient Data
Elaboration
The supplier has several quality-related support indicators, including Finished Product Inspection, warranty availability, and verified supplier status. These are positive signs because they indicate that the supplier presents some quality assurance mechanisms on the platform.
However, customer feedback is weak as a validation source. The store rating is 3.6, and there are only 2 reviews. This review volume is too small to establish a reliable customer satisfaction pattern. The rating also does not indicate consistently strong buyer feedback. No detailed inspection reports, defect rates, return records, or independent certifications are provided.
Scoring Rationale
The supplier has basic quality assurance indicators through Finished Product Inspection and verification status, which prevents the score from falling into the low range. However, the modest store rating and extremely limited review count create clear uncertainty. Because customer feedback is insufficient to strongly validate product quality, the supplier should receive a moderate score rather than a high score.
Final Score
13 / 20
Total Score
81 / 100
Score Breakdown:
- Company Strength: 19 / 20
- Platform & Compliance Credibility: 20 / 20
- Business Performance: 12 / 20
- Service Capability: 7 / 10
- Delivery Performance: 10 / 10
- Quality & Customer Feedback: 13 / 20
Procurement Recommendation
Fujian Wanlong Diamond Tools Co., Ltd. is recommended for conditional cooperation, especially for buyers who prioritize factory scale, long-term presence, Trade Assurance protection, and on-time dispatch performance.
The supplier appears suitable for: - Buyers sourcing diamond tools, abrasive tools, grinding discs, resin fickerts, or calibration rollers - Importers or distributors needing a large-scale China-based manufacturing supplier - Buyers who can place trial orders before committing to larger procurement volumes - Customers requiring minor customization or ODM service, based on the provided platform labels
Main risks: - Store rating is only 3.6 - Review count is very limited at 2 reviews - Full Customization capability is Insufficient Data - Independent quality certifications are Insufficient Data - Detailed production capacity, lead time, defect rate, and audit report data are Insufficient Data
Growth potential is positive due to the supplier’s large factory scale, 880+ staff, 23-year Gold Supplier history, Trade Assurance support, and 100.0% on-time dispatch rate. For procurement use, the recommended approach is to start with sample validation or a controlled trial order, use Trade Assurance, request inspection documentation, and confirm technical specifications before scaling order volume.
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