Shanghai Quanmi Mechanical Sealing Co., Ltd. Supplier Evaluation

Executive Summary

Shanghai Quanmi Mechanical Sealing Co., Ltd. is a China-based supplier located in Shanghai, offering rubber sealing-related products such as NBR nitrile rubber items, O-ring repair box seals, DIN 3869 ED seals, and NBR/FKM metric sealing products. The supplier shows a small-scale operating profile, with a reported factory area of 700+ m² and 10+ staff, but it is marked as a verified supplier, which provides a basic level of credibility. On , the company is a 2-year Gold Supplier and supports Trade Assurance, with platform labels indicating response time within 2 hours and 100.0% on-time delivery. Commercial performance is moderate, with 20+ orders and CN¥54K+ transaction value over the past six months, supported by a 5.0 store rating and 10+ reviews. This supplier appears suitable for buyers seeking low-MOQ sealing products, sample orders, small-batch procurement, or early-stage supplier qualification, while larger-volume buyers should further verify production capacity and quality control documentation.

Detailed Analysis

1. Company Strength

Basis
- Factory location: Shanghai, China
- Factory area: 700+ m²
- Employees: 10+ staff
- Verified supplier: True
- Product scope includes rubber sealing products such as NBR, FKM, O-rings, ED seals, and repair box seals

Elaboration
The supplier has a relatively small physical and staffing scale based on the provided data. A 700+ m² facility and 10+ staff indicate basic production or trading-support capability rather than a large-scale industrial manufacturing operation. However, the presence of verified supplier status improves confidence that the company has passed some form of platform or supplier verification. The product listings show a focused sealing-related product range, which supports specialization within rubber sealing components, but the available data does not confirm advanced manufacturing lines, annual capacity, automated equipment, or third-party factory certifications.

Scoring Rationale
The company should not be scored as a large or medium-scale stable supply chain due to its limited factory area and small staff size. At the same time, it should not be considered weak, because it has a verified supplier status and a focused product offering. The most appropriate assessment is a small supplier with basic production and supply capability, suitable for low-volume or flexible purchasing rather than high-capacity procurement without further audit.

Final Score
12 / 20

2. Platform & Compliance Credibility

Basis
- Gold Supplier: True
- Gold Supplier duration: 2 years
- Trade Assurance: True
- Certification / industry labels: “Response time ≤2h”, “On-time delivery 100.0%”
- Verified supplier: True
- Other certification details: Insufficient Data

Elaboration
The supplier has several important platform credibility indicators, including Gold Supplier status, Trade Assurance support, and verified supplier status. These elements provide a basic level of transactional protection and platform-backed credibility. However, the Gold Supplier history is relatively short at 2 years, and the provided certification labels are mainly operational performance indicators rather than detailed factory, product, or quality system certifications. There is no provided evidence of ISO certification, product compliance certification, or detailed audit scope.

Scoring Rationale
The supplier has core credibility features, including Gold Supplier status, Trade Assurance, and supplier verification, which supports a score above the basic level. However, the short Gold Supplier duration and lack of detailed compliance certification prevent it from reaching the high-confidence range. The credibility is solid for platform-based sourcing, but still requires further document verification for regulated, technical, or large-volume procurement.

Final Score
15 / 20

3. Business Performance

Basis
- Orders in the past six months: 20+
- Transaction value in the past six months: CN¥54K+
- Store rating: 5.0
- Number of reviews: 10+

Elaboration
The supplier has demonstrated active commercial transactions within the past six months, with more than 20 orders and transaction value above CN¥54K. The 5.0 store rating is positive, and the presence of 10+ reviews provides some customer feedback validation. However, the order volume and transaction value remain moderate to low compared with suppliers showing large-scale commercial traction. The review count is also limited, which means the rating should be interpreted carefully because the sample size is not large.

Scoring Rationale
The commercial data supports a stable but not high-volume business profile. The supplier has real transaction activity and positive customer scoring, but the relatively limited order count, transaction value, and review base do not justify a top-tier business performance score. It is better positioned as a supplier with proven small-to-medium order activity rather than a highly validated high-volume supplier.

Final Score
14 / 20

4. Service Capability

Basis
- Communication response time: ≤2h
- Platform label: “Response time ≤2h”
- Full Customization: Insufficient Data
- Other service capabilities: Insufficient Data

Elaboration
The supplier demonstrates a reasonable response speed, with response time stated as within 2 hours. This indicates acceptable communication efficiency for inquiry handling, quotation discussion, and basic procurement coordination. However, there is no provided data confirming Full Customization capability, design support, engineering assistance, OEM/ODM services, or dedicated account service. Therefore, the service assessment must rely mainly on response speed rather than broader customization or technical support capability.

Scoring Rationale
A response time within 2 hours is positive, but the scoring standard gives the highest range to suppliers responding within 1 hour and supporting strong customization. Since the response time is not within 1 hour and customization data is unavailable, the supplier should receive a mid-level service score. It appears serviceable for standard product inquiries and small-batch orders, but customization capability remains unverified.

Final Score
7 / 10

5. Delivery Performance

Basis
- On-time delivery rate: 100.0%
- Platform label: “On-time delivery 100.0%”

Elaboration
The supplier reports a 100.0% on-time delivery rate, which is a strong delivery performance indicator. This suggests that, based on the available platform data, the supplier has fulfilled orders within committed delivery timelines. However, the provided data does not include the exact number of shipments used to calculate this rate, shipment destinations, product complexity, or average lead time. Therefore, the delivery score can be high, while recognizing that the data depth is limited.

Scoring Rationale
According to the scoring framework, an on-time delivery rate above 90% qualifies for 9 to 10 points. Since the reported rate is 100.0%, the supplier deserves a top-range score. A full score is reasonable for the stated metric, though buyers should still confirm lead times and delivery terms for larger or customized orders.

Final Score
10 / 10

6. Quality & Customer Feedback

Basis
- Store rating: 5.0
- Number of reviews: 10+
- Verified supplier: True
- Finished Product Inspection: Insufficient Data
- Factory Verification: Verified supplier status provided, but detailed factory verification scope is Insufficient Data

Elaboration
The supplier has a strong store rating of 5.0, supported by more than 10 reviews. This indicates positive customer feedback, but the review base is still relatively limited, so the rating should not be interpreted as broad market validation. Verified supplier status provides some quality-related confidence at the supplier credibility level, but the data does not confirm Finished Product Inspection, formal quality management systems, inspection reports, defect rates, or product certification. As a result, the supplier’s quality profile is positive but not fully documented.

Scoring Rationale
The high rating supports a favorable quality and customer feedback assessment, but the small number of reviews and lack of specific inspection or quality system information limit the score. The supplier has enough evidence to be considered better than basic or insufficient, but not enough to qualify for the highest range, which requires high review volume and a more complete quality assurance system.

Final Score
15 / 20

Total Score

Total Score: 73 / 100

• Company Strength: 12 / 20
• Platform & Compliance Credibility: 15 / 20
• Business Performance: 14 / 20
• Service Capability: 7 / 10
• Delivery Performance: 10 / 10
• Quality & Customer Feedback: 15 / 20

Procurement Recommendation

Shanghai Quanmi Mechanical Sealing Co., Ltd. is recommended for cautious cooperation, especially for small-batch procurement, sample orders, low-MOQ sourcing, and buyers seeking rubber sealing products through Trade Assurance. The supplier has positive platform credibility, verified supplier status, a 5.0 store rating, and excellent reported on-time delivery performance.

The supplier is most suitable for customers requiring standard sealing products, flexible order quantities, and platform-protected transactions. It may also be appropriate for buyers conducting early-stage supplier screening before scaling procurement volume.

Main risk points include limited company scale, small staff size, moderate transaction volume, limited review count, and insufficient data regarding Finished Product Inspection, formal quality certifications, production capacity, and customization capability. Before placing large or technical orders, buyers should request quality inspection documents, material specifications, production capacity confirmation, sample testing, and detailed delivery terms.

Overall, the supplier shows growth potential as a focused small-scale sealing product supplier with good platform indicators, but it requires further verification before being used for high-volume, highly customized, or compliance-sensitive procurement.