Quanzhou Jdk Diamond Tools Co., Ltd. Supplier Evaluation
Executive Summary
Quanzhou Jdk Diamond Tools Co., Ltd. is a China-based supplier located in Fujian, with a reported factory area of over 3,000 m² and more than 30 staff. The supplier focuses on diamond polishing-related products, including diamond sponge foam, diamond polishing pads, and multi-step dry or flexible diamond polishing products. Its platform profile shows strong credibility indicators, including 21 years as a Gold Supplier, Trade Assurance support, verified supplier status, response-time labeling, and a 96.3% on-time delivery rate. Commercial activity is also relatively strong, with 300+ orders and CN¥1.5M+ transaction value in the past six months, supported by a 4.6 store rating and 50+ reviews. This supplier appears suitable for buyers seeking established platform credibility, flexible low-MOQ purchasing, and stable delivery performance. Key limitations include limited disclosed workforce scale, no provided evidence of Full Customization capability, and no stated Finished Product Inspection system.

Detailed Analysis
1. Company Strength
Basis
- Factory area: 3,000+ m²
- Employees: 30+ staff
- Verified supplier: True
- Location: Fujian, China
Elaboration
The supplier has a disclosed physical factory base of more than 3,000 m² and a workforce of over 30 employees. This indicates a real operating facility with basic production capacity rather than a purely trading-oriented profile. The verified supplier status further supports the existence and credibility of the company’s operational base.
Scoring Rationale
The company does not reach the profile of a large-scale manufacturing group due to the relatively modest employee count. However, the factory area, verified supplier status, and active product offering indicate a stable small-to-mid-sized manufacturing operation with sufficient baseline production capability. The available data supports a medium-strength assessment rather than a top-tier scale rating.
Final Score
15 / 20
2. Platform & Compliance Credibility
Basis
- Gold Supplier: True
- Gold Supplier tenure: 21 years
- Trade Assurance: True
- Verified supplier: True
- Platform labels: Response time ≤2h; On-time delivery 96.3%
Elaboration
The supplier demonstrates strong platform credibility. A 21-year Gold Supplier history is a significant trust indicator within the environment. Trade Assurance support provides additional transactional protection, while verified supplier status and performance labels strengthen buyer confidence.
Scoring Rationale
The long Gold Supplier tenure, Trade Assurance availability, and verified supplier status form a complete and credible platform profile. The available certification and performance labels are relevant and consistent with a mature supplier account. No additional third-party product certifications were provided, so the score is strong but not absolute maximum.
Final Score
19 / 20
3. Business Performance
Basis
- Past 6-month orders: 300+
- Past 6-month transaction value: CN¥1.5M+
- Store rating: 4.6
- Reviews: 50+
Elaboration
The supplier shows active recent commercial performance, with more than 300 orders and over CN¥1.5M in transactions during the past six months. The 4.6 rating indicates generally positive buyer satisfaction, and 50+ reviews provide a moderate level of market validation.
Scoring Rationale
Order volume and transaction value are solid, showing that the supplier is commercially active and has already passed a meaningful level of buyer validation. However, the review count is not especially high, and the 4.6 rating is good but not top-tier. This supports a stable medium-to-strong business performance score.
Final Score
17 / 20
4. Service Capability
Basis
- Communication response time: ≤2h
- Full Customization capability: Insufficient Data
Elaboration
The supplier’s response time of within two hours indicates acceptable communication efficiency for online sourcing and quotation follow-up. However, the provided data does not confirm whether the supplier supports Full Customization, OEM, ODM, private labeling, packaging customization, or technical customization.
Scoring Rationale
The response time is strong, but the absence of disclosed customization capability prevents a higher score. For procurement buyers requiring tailored specifications or branded products, this should be clarified before placing larger or repeat orders.
Final Score
7 / 10
5. Delivery Performance
Basis
- On-time delivery rate: 96.3%
Elaboration
The supplier’s reported on-time delivery rate of 96.3% is above the 90% benchmark for strong delivery performance. This suggests reliable order fulfillment capability within the platform-tracked delivery framework.
Scoring Rationale
A 96.3% on-time delivery rate qualifies for the highest scoring band under the delivery criteria. While no additional logistics details are provided, the available delivery data is clearly positive and supports confidence in routine order execution.
Final Score
10 / 10
6. Quality & Customer Feedback
Basis
- Store rating: 4.6
- Reviews: 50+
- Verified supplier: True
- Finished Product Inspection: Insufficient Data
- Factory Verification: Verified supplier status provided
Elaboration
The supplier has a 4.6 store rating and more than 50 reviews, indicating a generally positive customer feedback profile. Verified supplier status adds credibility to the company profile. However, the data does not state whether the supplier has Finished Product Inspection, formal quality control certification, product testing reports, or any specific factory audit details beyond verified supplier status.
Scoring Rationale
The customer feedback level is good, but not extensive. The rating is favorable, yet the absence of explicit Finished Product Inspection or detailed quality assurance documentation limits confidence in systematic quality control. The score reflects acceptable quality credibility with some information gaps.
Final Score
15 / 20
Total Score
83 / 100
Procurement Recommendation
Cooperation is recommended, especially for buyers seeking diamond polishing products from an established supplier with long platform history, Trade Assurance, low MOQ options, active transaction records, and strong delivery reliability.
This supplier is most suitable for: - Small to medium-sized importers testing diamond polishing product demand - Distributors requiring flexible order quantities - Buyers prioritizing platform credibility and delivery reliability - Procurement teams needing a supplier with proven recent transaction activity
Main risks: - Customization capability is not confirmed - Finished Product Inspection information is not provided - Workforce scale appears moderate rather than large - Quality control system details are limited beyond store rating and verified supplier status
Growth potential is positive based on 21 years of Gold Supplier history, 300+ recent orders, CN¥1.5M+ recent transaction value, and a 96.3% on-time delivery rate. For larger procurement programs, buyers should request quality inspection procedures, customization confirmation, production capacity details, and sample validation before scaling orders.
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