What certifications does the product have?

The product meets CE, SAA, and UL standards for electrical and plumbing systems, and the company holds ISO9001 certification.

What is the minimum order quantity?

The minimum order quantity is 1 set.

What payment terms are accepted?

We accept LC, T/T, PayPal, Western Union, and small-amount payments.

Au Standard Granny Flat 20FT Expandable Modular House with Steel Structure Frame

Name: Au Standard Granny Flat 20FT Expandable Modular House with Steel Structure Frame
Brand: Shandong Derun Green Building Integrated House Co., Ltd.
SKU: 2157372022

Shandong, ChinaShandong Derun Green Building Integrated House Co., Ltd.

US$2,500.00-3,500.00

1 Set

Product specifications

20ft

30ft

40ft

Product profile

Customization

Available

After-sales Service

Whole Service

Application

Apartment

Model NO.

5900*6300*2480

Fast Installation

Feature

Earthquake Resistant, Easily Movable, Eco-Friendliness, Flexibly Combinable, Leak Proof, Moisture Proof, Safe, Thermal Insulation, Waterproof, Wind Resistance

Material

Steel Structure

Earthquake Resistant Grade

8 Grade

Wall

Thickness 50mm 75mm 100mm

Service Life

More Than 30 Years

Warranty

3 Years

Steel Structure

2.5mm 3.0mm Galvanized Steel Fram

Color

Can Be Customized

Layout

Can Be Customized

Transport Package

Shipping to Whole World

Specification

5900*6300*2480mm

Trademark

DERUN

Origin

Made in China

HS Code

9406900090

Production Capacity

500sets/Month

Key features

Foldable Logistics Design: 2 units fit in one 40HQ container, reducing shipping costs by 50%.

Rapid 10-Minute Setup: 90% pre-assembled; final expansion takes only 10 minutes with 3 people.

Earthquake & Wind Resistant: Built for extreme environments with Grade 8 earthquake and Grade 10 wind resistance.

Customizable Layouts: Available in Studio, 1, 2, or 3-Bedroom configurations with bespoke dimensions.

Premium Wall Insulation: 50/75mm high-density rock wool ensures fireproofing and superior thermal insulation.

Plug & Play Systems: Fully integrated plumbing and electrical systems meeting CE/SAA/UL standards.

Durable Steel Structure: 2.3mm hot-dip galvanized steel frame offers anti-corrosion protection for 20+ years.

30-Year Service Life: Designed for long-term durability with a service life exceeding 30 years.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceSelf-brandedQuality Assurance

Shandong Derun Green Building Integrated House Co., Ltd.

Shandong, 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: 8 YearsNearest Port: Qingdao Port, Rizhao Port, Ningbo PortAverage Response Time: ≤0.80h

About Our Factory & Business Background

AddressWeifang, Shandong, China

Plant Area12643 square meters

Number of Employees52

Registered Capital10,000,000 RMB

Terms of PaymentLC, T/T, D/P, PayPal, Western Union, Small-amount payment, Money Gram

International Commercial Terms(Incoterms)FOB, EXW, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, Others, FCA

Average Lead TimePeak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays

Minimum Order Quantity1 Set

Supply Chain Partners20

Our Production Capability & Technical Expertise

Main ProductsExpandable Container House, Flat Packed Container House, Detachable Container House, Folding Container House, Creative Container House, Apple Cabin

Production Lines10

Production MachinesForming Line, Welding Line, CoSpraying Linenfidential

QA/QC inspectors2 people

Inspection Type for Finished Products100% inspection(Visual inspection & Function inspection)

Inspection Method for Finished ProductsHave instructions and uniformly followed

R&D Engineers8 people

Traceability of Raw MaterialsYes

Own BrandYes

Our Industry Experience & Global Business Record

Year of Establishment2018-11-09

Main MarketsNorth America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe

Repeat Buyers Choice50%~80%

Number of Foreign Trading Staff8

Overseas Agent/BranchNo

New Products Launched in Last yearYes

Our Certifications, Standards & Industry Recognition

Management System CertificationISO9001:2015, ISO45001:2018, ISO14001

Product CertificationCE

Cooperated with Fortune 500No

Product Q&A

Q:What is the lead time for orders?

Typically 15-25 days from order to port. During peak or off-peak seasons, lead time is within 15 workdays.

Q:Can the size and layout be customized?

Yes, layouts are available as Studio, 1, 2, or 3-Bedroom. Bespoke heights and lengths are available for bulk orders.

Q:How many units can fit in a shipping container?

The foldable design allows 2 units to fit in one 40HQ (High Cube) ocean container.

Q:What is the warranty period for the house?

We provide a 3-year warranty covering the product.

Q:Is specialized labor required for installation?

No, no specialized labor is required. Installation involves leveling the ground, expanding with a crane or jack, securing corners, and plugging in utilities.