Is it difficult to assemble the room?

Not at all. As long as you can use electric tools, you can build a house independently according to the construction drawings

What materials are used for the walls and roof?

Wall panels are 75mm EPS sandwich panel or rock wool sandwich panel. Roof is 50mm EPS sandwich panel or rock wool sandwich panel.

What is the warranty period for the house?

The warranty period is one year.

Luxury Double Wing Prefab Expansion Home with Rock Wool

Name: Luxury Double Wing Prefab Expansion Home with Rock Wool
Brand: Tianjin Evermore International Co., Ltd.
SKU: 2272261545

Tianjin, ChinaTianjin Evermore International Co., Ltd.

US$3,499.00-8,999.00

1 Set

Product profile

Customization

Available

After-sales Service

Support Video Installation

Material

Sandwich Panel

Name

Double Wing Expansion House

Framework

Galvanized Steel+Rock Wool Material

Wall

Galvanized Steel+Sandwich Cotton Material

Waterproof

Grade a Waterproof

Fireproof

a-Level Fire Protection

Warranty

a Year

Usage

Warehouse, Villa, Temporary Offices, Workshop

Certification

CE, ISO, SGS Certificate

Customized

Transport Package

Plastic Paper Packaging

Specification

5900*L6300*W2480*H

Trademark

Yijia

Origin

Hebei, China

HS Code

9406900090

Production Capacity

30000units/Year

Key features

Double Wing Expansion Design: Foldable wing panels increase usable area while reducing folded space for limited areas.

Premium Insulation Materials: Galvanized steel frame with rock wool or EPS sandwich panels for heat and sound insulation.

Rapid Installation Process: Easy assembly by 2-3 people in 15-20 minutes without solder joints or complex links.

Complete Bathroom Facilities: Equipped with bathroom, shower, water heater, and AC, comparable to star-rated hotels.

High Safety Standards: Grade 11 wind resistance, Grade 8 earthquake resistance, and A-level fire protection.

Full Customization Support: Supports customization of colors, terraces, roofs, and layouts based on design drawings.

Durable Waterproof Structure: Fully sealed top with corner drainage system ensures roof does not leak.

Direct Manufacturer Sales: Factory direct sales avoiding intermediaries, offering discounted prices and quality control.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceIn-stock CapacityFast Delivery

Tianjin Evermore International Co., Ltd.

Tianjin, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 1.5 year CertifiedNearest Port: Tianjin PortAverage Response Time: ≤2.57h

AI-Powered supplier vetting

SummaryThe supplier is a comprehensive trading and manufacturing company focused on prefab and container-based buildings, with stated own factories and experience in design, production, and sales. It offers broad customization and OEM/ODM services, maintains written inspection and supplier-management procedures, and holds ISO9001:2015, ISO45001:2018, and ISO14001 certifications. However, it reports no valid manufacturing-capacity contract with affiliated subcontractors, no overseas warehouse, showroom, agent, or branch, and no participation in offline trade shows. Its R&D record is limited: no SDK is available and no new product was reported in the past year. Exporting experience is stated as three years, with peak-season lead time of one month and off-season lead time within 15 working days. No cooperation with Fortune 500 companies is reported.

Supplier typeThe supplier describes itself as a comprehensive trading company integrating design, production, and sales, with stated own factories. Its overseas service footprint is limited: it reports zero countries served and no overseas agents or branches.

CertificationsThe supplier explicitly reports ISO9001:2015, ISO45001:2018, and ISO14001 management-system certifications. Product compliance certification is only categorized as “Others,” without named standards or certificates.

R&D capabilityThe supplier offers ODM services and broad design-based customization, but reports no available SDK and no new products during the past year. These records show design-service capability but also a stated limitation in recent product innovation.

Production capacityThe supplier states that it has own factories and covers design, production, and sales, with in-stock capability and written inspection procedures. However, it also reports no valid contract with affiliated subcontractors, so the contractual basis for all manufacturing capacity is incomplete.

Customization capabilityThe supplier explicitly supports customization from samples and designs, full, minor, and flexible customization, and provides ODM services. This is direct evidence of broad customization coverage.

Product Q&A

Q:How to make the payment?

TT and letter of credit are acceptable, and we will be even more grateful to TT. 30% deposit before production and 70% balance before TT loading.

Q:What is the delivery time?

This depends on the order quantity. Generally speaking, the delivery time will be within 15 to 30 days.

Q:How to ship?

Ocean container loading

Q:How to install it?

We will provide you with installation instructions and videos, and if necessary, we will send technical personnel to assist you. However, visa fees, airfare, accommodation, and wages will be provided by the buyer.

Q:How do you ensure the quality of the product?

Strict product quality control enables quality to achieve the future. This is the purpose of our factory. Every product in our factory has strict testing procedures and must achieve 100% quality before delivery.