Shandong Wanhai Steel Structure Co., Ltd. Supplier Evaluation

Executive Summary

Shandong Wanhai Steel Structure Co., Ltd. is a China-based supplier located in Shandong, positioned in the prefabricated and modular building segment, including container houses, folding modular houses, and pre-assembled cabin products. The company shows a moderate production foundation, with a reported factory area of 9,300+㎡, 50+ staff, and verified supplier status. Its platform credibility is relatively strong, supported by 5 years as an Gold Supplier, Trade Assurance availability, and multiple service/quality-related tags including Finished Product Inspection, ODM service, warranty availability, and full customization.

Commercially, the supplier demonstrates active but not large-scale transaction performance, with 20+ orders and CN¥1.7M+ transaction value in the past six months, alongside a 5.0 store rating from 10+ reviews. Delivery reliability is a clear strength, with a reported 100.0% on-time dispatch rate. This supplier appears suitable for buyers seeking customizable prefabricated housing solutions with low MOQ requirements, while larger-volume buyers should further verify production scalability and long-term quality consistency.

Detailed Analysis

1. Company Strength — 20 Points

Basis

• Company name: Shandong Wanhai Steel Structure Co., Ltd.
• Country/region: China, Shandong
• Factory area: 9,300+㎡
• Employees: 50+ staff
• Verified supplier: True

Elaboration

The supplier has a declared factory area of more than 9,300 square meters and a workforce of more than 50 employees. This indicates a real manufacturing base with basic-to-moderate production capacity rather than a purely trading-oriented profile. The verified supplier status further supports the existence of an operational business entity and production-related capability.

However, the available data does not indicate very large-scale capacity, multiple production bases, advanced automation, annual production volume, or detailed factory audit results. Therefore, while the company demonstrates stable manufacturing fundamentals, the evidence does not fully support classification as a large-scale supply chain player.

Scoring Rationale

The company fits the profile of a medium-sized and relatively stable factory. The factory area is meaningful for prefabricated/modular building products, and the 50+ staff count suggests operational production capability. Verified supplier status adds credibility, but the absence of detailed audit reports, production capacity figures, or large workforce scale limits the score from reaching the top tier.

Final Score

16 / 20

2. Platform & Compliance Credibility — 20 Points

Basis

• Gold Supplier: True
• Gold Supplier history: 5 years
• Trade Assurance: True
• Verified supplier: True
• Certification/industry tags:
• Warranty available
• Finished product inspection
• ODM service available
• Full customization

Elaboration

The supplier has maintained Gold Supplier status for 5 years, which provides a meaningful platform credibility record. Trade Assurance availability improves buyer protection during online transactions. The verified supplier status also strengthens the supplier’s credibility profile.

The listed service and compliance-related tags are relatively complete, especially Finished Product Inspection, warranty availability, ODM service, and full customization. These tags suggest that the supplier has at least a platform-disclosed framework for quality control, customization, and after-sales support. However, the data does not include specific third-party certifications, international standards, test reports, or named factory audit institutions.

Scoring Rationale

The supplier has a strong platform credibility foundation: 5-year Gold Supplier history, Trade Assurance, supplier verification, and several relevant operational tags. This represents a well-supported platform profile. The score is not maximized because the data does not show additional formal certifications beyond platform and service labels.

Final Score

18 / 20

3. Business Performance — 20 Points

Basis

• Orders in past 6 months: 20+
• Transaction value in past 6 months: CN¥1.7M+
• Store rating: 5.0
• Number of reviews: 10+

Elaboration

The supplier has generated more than 20 orders and over CN¥1.7M in transaction value during the past six months. This indicates active commercial performance and real buyer transactions on the platform. The 5.0 store rating is positive and suggests that existing buyers have provided favorable feedback.

However, the review volume is only 10+, which is relatively limited. While the transaction value is notable, the order count is moderate rather than high. This suggests that the supplier has commercial validation but may not yet demonstrate the transaction density or broad buyer base of a highly mature, high-volume platform supplier.

Scoring Rationale

The supplier shows stable medium-level business activity. The transaction amount is solid relative to the available order count, and the 5.0 rating is a strong positive indicator. Nevertheless, the limited number of reviews and moderate order volume prevent the business performance score from entering the highest band.

Final Score

16 / 20

4. Service Capability — 10 Points

Basis

• Communication response time: ≤4h
• Full customization: Available
• ODM service: Available

Elaboration

The supplier reports a communication response time of within 4 hours, which is acceptable for B2B sourcing communication. The availability of Full Customization and ODM service indicates that the supplier can support customized requirements rather than only standard off-the-shelf products. This is important for prefabricated buildings and modular housing, where buyers may require layout, size, functional, or design adjustments.

However, the response time is not within the ≤1 hour level required for the highest service tier. No additional data is provided regarding dedicated account management, multilingual support, sample handling speed, design turnaround time, or after-sales response process.

Scoring Rationale

The supplier demonstrates good service capability due to full customization and ODM availability. Communication speed is reasonable, but not exceptional. Based on the provided data, it fits the upper range of normal service capability rather than the top service tier.

Final Score

8 / 10

5. Delivery Performance — 10 Points

Basis

• On-time dispatch rate: 100.0%

Elaboration

The supplier reports a 100.0% on-time dispatch rate, which is a strong indicator of delivery discipline within the available platform data. For prefabricated and modular building products, timely dispatch is important because projects may involve site preparation, installation scheduling, and transportation coordination.

The provided data does not include average lead time, production cycle, shipping method, delay history, or performance by destination market. Therefore, the assessment is limited strictly to the disclosed on-time dispatch rate.

Scoring Rationale

According to the scoring standard, an on-time dispatch rate above 90% qualifies for 9–10 points. A reported 100.0% rate supports a full score in this dimension, assuming the platform data is accurate.

Final Score

10 / 10

6. Quality & Customer Feedback — 20 Points

Basis

• Store rating: 5.0
• Number of reviews: 10+
• Finished Product Inspection: Available
• Verified supplier: True
• Warranty available: Yes

Elaboration

The supplier has a 5.0 store rating, which is a strong quality-related signal from existing buyers. Finished Product Inspection is listed, indicating that some form of final product checking is available before shipment. Warranty availability also adds a layer of buyer protection and post-delivery support. Verified supplier status further supports the supplier’s credibility from a quality assurance perspective.

However, the review base is only 10+, which limits the statistical reliability of the rating. The data does not include defect rates, inspection reports, quality certificates, product test standards, or detailed warranty terms. Therefore, the quality profile is positive but not fully comprehensive.

Scoring Rationale

The supplier has a strong rating and several quality-supporting indicators, including Finished Product Inspection and warranty availability. The main limitation is the relatively small review count and lack of detailed quality documentation. This places the supplier at the high end of the “good rating with basic quality assurance” range, but below the top tier reserved for suppliers with large feedback volumes and more complete quality evidence.

Final Score

17 / 20

Total Score

Procurement Recommendation

Recommendation: Recommended for conditional cooperation.

Shandong Wanhai Steel Structure Co., Ltd. demonstrates a solid supplier profile for buyers sourcing prefabricated houses, modular container houses, folding container houses, and pre-assembled cabin products. The supplier is especially suitable for small to medium-sized buyers, project-based purchasers, distributors testing new product categories, and customers requiring low MOQ orders, as the listed products show a minimum order quantity of 1 set.

The main strengths are its 5-year Gold Supplier status, Trade Assurance support, verified supplier status, full customization capability, Finished Product Inspection availability, 5.0 store rating, and 100.0% on-time dispatch rate.

Key risks include limited review volume, moderate six-month order count, and insufficient data on production capacity, international certifications, detailed inspection standards, lead times, and warranty terms. Before placing large or repeat orders, buyers should request factory audit documents, product specifications, inspection records, customization drawings, delivery schedule confirmation, and warranty details.

Overall, the supplier shows good growth potential and is a credible option for customized prefabricated housing procurement, provided that buyers conduct order-specific verification before scaling up cooperation.