Yiwu Sumin Locks Industry Co., Ltd. Supplier Evaluation

Executive Summary

Yiwu Sumin Locks Industry Co., Ltd. is a Zhejiang, China-based supplier with a reported factory area of 9,000+㎡ and 130+ staff, indicating a medium-scale manufacturing operation. The company is listed as a verified supplier and has a strong platform history, including 16 years as a Gold Supplier, Trade Assurance support, and certification/service tags such as Finished Product Inspection, ODM service, Full Customization, and Minor Customization. Its product data focuses on key blanks, replacement car key shells, and related lock/key components, with MOQs ranging from 5 pieces to 10,000 pieces depending on product type.

Commercial performance appears moderate, with 90+ orders and CN¥338K+ transaction value over the past six months, supported by a 4.7 store rating and 30+ reviews. Delivery performance is strong, with a 97.7% on-time shipment rate. This supplier is suitable for buyers seeking established platform credibility, flexible customization, and reliable delivery, though review volume and response speed are not at top-tier levels.

Detailed Analysis

1. Company Strength — 20 Points

Basis

• Factory location: Zhejiang, China
• Factory area: 9,000+㎡
• Employees: 130+ staff
• Verified supplier: True
• Product scope provided includes key blanks, replacement car key shells, brass blade products, and related key components
• Factory audit/certification beyond “verified supplier”: Insufficient Data

Elaboration

The supplier shows a defined physical manufacturing base with 9,000+㎡ of factory space and 130+ employees. This scale suggests more than a small workshop operation and indicates the ability to support continuous production for standardized lock/key-related components. The presence of multiple product listings with varied MOQs also indicates a production setup capable of handling both high-volume parts and smaller-batch replacement items.

The “verified supplier” status provides a basic level of supplier validation, but the data does not specify detailed third-party factory audit reports, ISO certifications, production line count, annual output, equipment list, or quality management system certification. Therefore, while the company appears operationally stable, the depth of manufacturing capability cannot be fully confirmed from the provided dataset.

Scoring Rationale

A factory area above 9,000㎡ and a workforce above 130 staff place the supplier in the medium-scale factory category. These figures support a reasonable assessment of stable production capacity. However, the lack of detailed factory certification, production capacity data, and formal audit documentation prevents assigning a top-tier score. The company is stronger than a small basic producer but does not have enough disclosed data to be classified as a large-scale, fully documented supply chain operation.

Final Score

16 / 20

2. Platform & Compliance Credibility — 20 Points

Basis

• Gold Supplier: True
• Gold Supplier tenure: 16 years
• Trade Assurance: True
• Verified supplier: True
• Certification/service tags:
• Finished Product Inspection
• ODM service available
• Full Customization
• Minor Customization
• Other compliance certifications: Insufficient Data

Elaboration

The supplier has a strong platform credibility profile. Sixteen years as an Gold Supplier is a significant indicator of long-term platform presence. Trade Assurance support adds transaction protection for buyers, while verified supplier status provides additional confidence that the company has passed at least a basic verification process.

The listed platform tags also strengthen its credibility from a procurement perspective. Finished Product Inspection indicates some quality control process is presented on the platform. ODM and customization-related tags suggest the supplier is not limited to purely standard items and may support product adaptation. However, no independent compliance certificates, such as ISO, product safety certifications, or industry-specific certifications, are provided in the dataset.

Scoring Rationale

The combination of 16-year Gold Supplier status, Trade Assurance, verified supplier status, and multiple service/inspection tags supports a high score. The supplier has a mature and credible profile. The only reason for not assigning a perfect score is the absence of detailed third-party compliance documents or formal management system certificates in the provided data.

Final Score

19 / 20

3. Business Performance — 20 Points

Basis

• Past six months orders: 90+
• Past six months transaction value: CN¥338K+
• Store rating: 4.7
• Review count: 30+

Elaboration

The supplier has recorded more than 90 orders in the past six months, which indicates active commercial traction on the platform. A transaction value of CN¥338K+ reflects a moderate sales volume rather than a very high-volume supplier profile. The store rating of 4.7 is positive and suggests generally satisfactory customer experiences.

However, the number of reviews is 30+, which is useful but not large enough to be considered highly extensive customer validation. The data suggests steady business activity, but not a dominant or very high-volume market position. The sales performance is commercially meaningful, especially when combined with a positive rating, but it remains in the medium range rather than the top tier.

Scoring Rationale

The supplier demonstrates stable business activity with 90+ recent orders and CN¥338K+ transaction value. The 4.7 rating is favorable, but the review base is still limited. Compared with a supplier showing very high order volume, very large transaction value, and hundreds of reviews, this supplier’s commercial proof is moderate. Therefore, it fits best into the stable mid-level transaction category.

Final Score

15 / 20

4. Service Capability — 10 Points

Basis

• Response time: ≤7h
• Full Customization: Yes
• Minor Customization: Yes
• ODM service available: Yes
• Detailed communication efficiency metrics: Insufficient Data

Elaboration

The supplier supports Full Customization, Minor Customization, and ODM service, which indicates a relatively strong service capability for buyers requiring product adaptation. This is valuable for procurement teams sourcing customized key blanks, key shells, or related components where dimensions, materials, buttons, packaging, or branding requirements may vary.

The listed response time of ≤7 hours is acceptable but not top-tier. It does not meet the strongest service benchmark of response within one hour. The data also does not include inquiry response rate, quotation turnaround time, sample lead time, engineering support details, or multilingual sales support. As a result, the service capability appears solid but not exceptional based only on the available information.

Scoring Rationale

Customization capability is a clear strength, with Full Customization, Minor Customization, and ODM service all listed. However, response time is significantly longer than the ≤1 hour benchmark for the highest score range. The supplier should be considered service-capable for customized procurement, but communication speed may not be optimal for urgent sourcing projects.

Final Score

8 / 10

5. Delivery Performance — 10 Points

Basis

• On-time shipment rate: 97.7%

Elaboration

The supplier’s reported on-time shipment rate of 97.7% is strong. This level exceeds the 90% threshold for the highest scoring band and indicates reliable shipment execution based on the provided platform data.

For procurement teams, this delivery record is a positive signal, especially for repeat orders and replenishment-based sourcing. However, the dataset does not provide average lead time, peak-season delivery behavior, shipping method breakdown, delay dispute rate, or historical consistency beyond the reported on-time shipment rate. Therefore, the score should reflect strong available delivery data while recognizing that deeper logistics performance data is not provided.

Scoring Rationale

A 97.7% on-time shipment rate clearly qualifies for the 9–10 point range. Since the figure is well above 90%, the supplier demonstrates strong delivery reliability. A full 10 is reasonable under the defined scoring rule, though broader logistics data remains insufficient for a more detailed operational review.

Final Score

10 / 10

6. Quality & Customer Feedback — 20 Points

Basis

• Store rating: 4.7
• Review count: 30+
• Finished Product Inspection: Yes
• Verified supplier: True
• Factory Verification: Supplier verification is marked True; detailed factory verification report: Insufficient Data
• Product-specific defect rate, return rate, complaint rate, and inspection standards: Insufficient Data

Elaboration

The supplier has a 4.7 store rating, which indicates generally positive customer feedback. The presence of 30+ reviews provides some level of customer validation, although it is not a large review base. The Finished Product Inspection tag is a positive quality-related indicator, suggesting that final inspection is part of the supplier’s platform-disclosed quality assurance profile.

Verified supplier status further supports credibility, but the available data does not include detailed factory verification documents, inspection procedures, defect rates, material testing results, or product compliance certificates. Therefore, the supplier’s quality profile appears good at the platform level, but not fully documented at the technical or factory-audit level.

Scoring Rationale

The 4.7 rating, Finished Product Inspection tag, and verified supplier status justify a good quality score. However, the limited number of reviews and absence of deeper quality system data prevent a top-tier evaluation. The supplier appears to have basic to good quality assurance visibility, but buyers should still conduct sample testing or pre-shipment inspection before committing to large-scale procurement.

Final Score

16 / 20

Total Score

Procurement Recommendation

Recommendation: Recommended for cooperation, with controlled qualification steps.

Yiwu Sumin Locks Industry Co., Ltd. is suitable for buyers seeking a platform-verified, long-established supplier for key blanks, replacement car key shells, and related lock/key components. The company’s strongest advantages are its 16-year Gold Supplier history, Trade Assurance support, verified supplier status, customization capability, Finished Product Inspection tag, and excellent 97.7% on-time shipment rate.

Suitable customer types:
- Buyers requiring medium-scale supply from a China-based manufacturer
- Importers or wholesalers sourcing key blanks and replacement key-related components
- Customers needing ODM, minor customization, or full customization
- Buyers who value platform protection and long supplier history

Main risks:
- Review count is only 30+, which limits the depth of customer feedback validation
- Response time of ≤7h is acceptable but not best-in-class
- Detailed factory audit reports, ISO certifications, production capacity data, defect rates, and technical quality documentation are not provided
- Product compliance information is Insufficient Data

Growth potential:
The supplier shows strong platform credibility and reliable delivery performance. If it can provide more transparent factory audit documents, quality control records, production capacity data, and additional customer feedback, its procurement attractiveness could improve further, especially for larger or more compliance-sensitive buyers.