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Prefab Sourcing ยท Inspection ยท Global Delivery

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Home / Quality Control & Factory Inspection

Quality Control & Factory Inspection

PREFAB HOUSE QUALITY CONTROL

Production Visibility Before Your Prefab House Ships

For international prefab house buyers, quality control should begin before production and continue through final loading. Zhengzhou Vision coordinates specification review, production follow-up, finished-unit inspection and loading checks for confirmed orders.

Inspection scope depends on the selected model, configuration and contract. Photos and videos can be provided to document applicable checks before shipment.

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Steel frame cutting and component preparation for prefab house production

01

Material & Specification Review

Before production, the approved order information should identify the model, layout, dimensions, wall and roof system, doors, windows, finishes, electrical requirements, plumbing options and supplied accessories.

  • Steel-frame and structural component requirements
  • Wall panels, insulation and exterior finish
  • Door, window and glazing configuration
  • Electrical and plumbing requirements where applicable
  • Approved layout, colors and optional equipment

02

Production Follow-Up

Production follow-up helps confirm that the order is progressing against the approved specification. The visible scope may include structural assembly, wall panel installation, doors, windows, interior work and selected utilities.

  • Steel-frame fabrication and assembly progress
  • Wall, roof, door and window installation
  • Interior finish and selected equipment
  • Progress photos or video for confirmed orders
  • Communication of visible deviations requiring confirmation
Modular house assembly workshop during production follow-up
Finished prefab house units prepared for pre-shipment inspection

03

Finished-Unit Inspection

Before packing, the finished unit can be checked against the confirmed order and available inspection scope. Findings should be documented and any required correction should be communicated before shipment approval.

  • Overall appearance and visible finishes
  • Doors, windows, locks and opening functions
  • Lighting, switches and supplied electrical items where applicable
  • Bathroom, plumbing fixtures and accessories where applicable
  • Quantity and visible condition of supplied components

04

Packing & Loading Check

Loading supervision focuses on the confirmed shipping scope. Packing method, unit quantity, accessories and loading information should match the agreed order documents before container dispatch.

  • Unit and accessory quantity
  • Visible packing and protection
  • Loading sequence and container information
  • Reference photos or video during loading where arranged
  • Shipping documents according to the confirmed trade terms
Expandable prefab house production units inside the factory workshop

Inspection Records for Your Order

Depending on the agreed inspection scope, buyers may receive production photos, inspection photos, short videos, packing references and loading information. These records help the buyer review visible order details before shipment.

What You Provide

  • Approved product specification
  • Destination standards and project requirements
  • Required inspection points
  • Contact person for confirmation

What We Coordinate

  • Production progress follow-up
  • Applicable inspection photos or video
  • Correction communication where required
  • Packing and loading information

Important: Inspection is performed against the approved order specification and agreed scope. Product certificates and test reports must correspond to the selected model, manufacturing source and destination requirements.

DOCUMENTED TEST SCOPE

CE-CPR Certificate for Tested Colour Steel Activity Room Models

Certificate No. MAX8890L151EC records a conformity verdict for the listed 10FT, 20FT, 30FT and 40FT Colour Steel Activity Room samples under Regulation (EU) No 305/2011. The related test report is MAX8890L151E, issued on 07 September 2026.

CE-CPR Certificate of Compliance for tested 10FT, 20FT, 30FT and 40FT Colour Steel Activity Room models
Certificate No. MAX8890L151EC – select the image to open the PDF.

Documented details

  • Certificate applicant: Zhengzhou Vision International Trading Co., Ltd.
  • Product: Colour Steel Activity Room
  • Models: 10FT, 20FT, 30FT and 40FT
  • Standards cited: EN 1090-1:2009+A1:2011, EN 14509:2013 and EN 14351-1:2006+A2:2016
  • Verdict: Conform
View Certificate PDF
View Test Report

Scope notice: The certificate states that it applies only to the tested samples described and does not represent an assessment of the whole production. It is valid only in connection with test report MAX8890L151E.

Confirm Quality Requirements Before Ordering

Tell us the product, destination, quantity and inspection points that matter to your project. We will include the applicable production and inspection scope in the quotation discussion.

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Contact Info

Dongfang Building, Hanghai West Road, Erqi District, Zhengzhou, Henan Province, China

86-15937429937

willchen1015264822@gmail.com

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