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Project Cases

On-time aluminum window and door solutions for global projects. Explore our successful installations across residential villas, commercial buildings, and large-scale developments.

About DERCHI

Aluminum Door Window Manufacturer Serving the Japan Market

DERCHI Factory

Serving 100+ Countries with Over 100,000 Projects

DERCHI Windows & Doors is a leading aluminum window and door manufacturer in China, specializing in custom solutions for residential, commercial, and large-scale construction projects worldwide. With over 25 years of manufacturing experience, DERCHI operates a 70,000 m² modern production base in Foshan, Guangdong.

Global Certifications for Japanese Standards
DERCHI aluminum windows and doors are NFRC, AS2047 and CE certified. Our professional team of 80 R&D staff, 50 engineers and 250 workers supports full customization. All after-sales issues are addressed within 8 hours.

We provide one-stop aluminum window and door solutions, covering design, customization, manufacturing, quality inspection, packaging, logistics, and installation guidance. All products are fully compliant with international safety and performance standards required in Japan.

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Experience
25+
Years Industry Experience
Factory
70,000
Factory Area
Employees
600+
Enterprise Employees
Equipment
100+
Advanced Equipment

Why Choose Aluminum Windows for Japan?

Understanding the benefits of aluminum fenestration solutions for the Japanese market

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Superior Thermal Performance

Our thermal break aluminum profiles meet Japan's energy efficiency requirements. Advanced insulation technology helps reduce heating and cooling costs while maintaining comfortable indoor temperatures throughout Japan's varied climate seasons.

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Earthquake Resistant Design

Aluminum frames provide exceptional strength-to-weight ratio, making them ideal for Japan's seismic conditions. Our windows and doors are engineered to withstand structural movement while maintaining integrity and safety.

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Sound Insulation

Double and triple glazing options combined with quality seals provide excellent acoustic insulation. Ideal for properties in busy Japanese cities, reducing external noise by up to 45dB for peaceful living environments.

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Modern Aesthetic Design

Slim aluminum profiles allow for larger glass areas, maximizing natural light and providing unobstructed views. Available in various colors and finishes to complement both contemporary and traditional Japanese architecture.

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Enhanced Security

Aluminum's inherent strength provides superior security against break-ins. Our multi-point locking systems and reinforced frames meet international security standards, giving Japanese homeowners peace of mind.

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Eco-Friendly & Recyclable

Aluminum is 100% recyclable without losing quality, aligning with Japan's strong environmental values. Our manufacturing processes minimize waste, contributing to sustainable building certifications.

Types of Aluminum Windows Popular in Japan

Comprehensive window solutions designed for Japanese architectural preferences and climate requirements

Sliding Windows (引き違い窓)

The most popular window type in Japan, offering space-efficient operation and excellent ventilation. Our sliding windows feature smooth operation, superior weather sealing, and thermal break profiles for energy efficiency.

Casement Windows

Hinged windows that open outward or inward, providing excellent ventilation and unobstructed views. Our casement windows feature slim frames for maximum glass area and come with high-security multi-point locking systems.

Tilt and Turn Windows

Versatile windows offering multiple opening options for ventilation and easy cleaning. Perfect for high-rise apartments in Japanese cities where external access for cleaning is limited.

Fixed Windows

Non-opening windows that maximize natural light and views while providing excellent insulation. Perfect for areas where ventilation isn't required but aesthetic appeal and energy efficiency are priorities.

Top-Hung Windows

Opening from the bottom and tilting outward, these windows are ideal for ventilation in kitchens and bathrooms. They allow fresh air circulation while preventing rain from entering.

Panoramic Windows

Large-scale fixed or operable windows designed to maximize views and natural light. Ideal for Japanese homes with garden views or urban apartments with city panoramas.

Aluminum Door Solutions for Japanese Properties

From entry doors to panoramic sliding systems, discover our complete door range

Entry Doors

Make a lasting first impression with our premium aluminum entry doors. Featuring thermal break profiles, multi-point locking systems, and customizable designs suitable for Japanese homes.

  • Thermal break aluminum profiles
  • Multi-point security locking
  • Custom color options
  • Smart lock compatibility

Sliding Doors

Create seamless indoor-outdoor connections with our lift-and-slide doors. Engineered for smooth operation even in large dimensions, perfect for Japanese terraces and garden access.

  • Lift-and-slide mechanism
  • Large panel capabilities
  • Low threshold options
  • Triple glazing available

Bifold Doors

Maximize your opening width with our folding door systems. Perfect for connecting living spaces with gardens or patios, our bifold doors fold neatly to one side.

  • Multiple panel configurations
  • Inward or outward folding
  • Flush threshold options
  • Weather-resistant seals

Why Japanese Customers Choose DERCHI

DERCHI ranks among the top 3 worldwide in aluminum windows and doors

👤

1V1 Exclusive Service

Dedicated project manager assigned to your order, ensuring personalized attention and seamless communication throughout the entire process from design to delivery.

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Professional Technical Team

80 R&D experts and 50 engineers ready to solve complex technical challenges and customize products to meet specific Japanese building requirements.

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Free Design Proposal

Complimentary design consultations and detailed proposals based on your project drawings, helping you visualize the final result before production begins.

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Installation Guidance

Comprehensive installation video guides and documentation. On-site engineering support available for complex projects requiring professional guidance.

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After-Sales Care

8-hour response time for after-sales inquiries. 10-year quality warranty on all products, ensuring long-term peace of mind for Japanese customers.

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Stable Supply Capacity

300,000 m² annual production capacity ensures timely delivery for projects of any scale. 25-35 days typical lead time from order confirmation.

Visit Our Manufacturing Site

Doors and windows for any project are made at DERCHI's state-of-the-art facility. See our production capabilities and quality control processes.

Japanese Building Standards & Compliance

Understanding the regulatory requirements for aluminum windows and doors in Japan

Energy Efficiency Standards

Japan's Building Energy Efficiency Act sets requirements for thermal insulation. DERCHI aluminum windows and doors are designed to meet or exceed these standards:

  • Excellent U-values for windows
  • Thermal break profiles with polyamide strips
  • Double and triple glazing options
  • Warm edge spacers for reduced condensation
  • Certified thermal performance testing

Seismic & Safety Standards

All DERCHI products are engineered with Japan's seismic requirements in mind:

  • Structural integrity under movement
  • Air permeability classification
  • Water tightness testing
  • Wind load resistance certification
  • Safety glazing compliance
  • Fire resistance options available

Our Cooperative Partners

Collaborating with leading brands to deliver premium quality products

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Frequently Asked Questions

Common questions from our Japanese customers about aluminum windows and doors

1 Are you a factory or trading company?
Yes, we are a direct manufacturer. Our factory spans 70,000 m² and employs over 600 staff members. This allows us to maintain strict quality control and offer competitive pricing without middleman markups.
2 What is your main product range?
We specialize in aluminum doors and windows including casement, sliding, bifold, pivot doors, and entry doors. There are 700+ DERCHI stores in China and multiple dealers worldwide serving diverse markets.
3 How can I get a quote for my Japanese project?
Prices depend on your specific requirements. Please provide: 1) Project drawings or product schedule; 2) Frame color preference; 3) Glass type, thickness (single, double, triple, laminated, etc.) and specifications. Our team will respond within 24 hours with a detailed quotation.
4 What is the delivery time to Japan?
Production typically takes 25–35 days after deposit payment and drawing confirmation. Shipping to Japan via sea freight takes approximately 7-14 days depending on the port. We also offer express shipping options for urgent orders.
5 Do you provide warranty for products sold in Japan?
Yes, we offer a comprehensive 10-year quality warranty on all products. This covers manufacturing defects and ensures your investment is protected. Our after-sales team responds within 8 hours to address any concerns.
6 What installation support do you provide?
We provide detailed installation video guides and comprehensive documentation. For large-scale projects, we can send engineers for on-site guidance and training of local installation teams.
7 Are your products certified for the Japanese market?
Yes, our products meet NFRC, AS2047, CSA, AAMA, and CE standards. Additional certifications and test reports can be provided upon request to meet specific Japanese requirements.

Aluminum Window Maintenance Tips for Japanese Climates

Keep your DERCHI windows and doors performing optimally year-round

Seasonal Care Recommendations

Japan's climate with humid summers and cold winters requires proper window maintenance. Clean frames and glass twice yearly using mild soap and water. Avoid abrasive cleaners that can damage the powder-coated finish. Lubricate hinges and locks annually with silicone-based products. Check weather seals before rainy season and winter.

Long-Term Performance

Aluminum windows require significantly less maintenance than wood alternatives. The powder-coated finish is resistant to UV fading and doesn't require repainting. Drainage channels should be cleared periodically to prevent water accumulation during typhoon season. With proper care, DERCHI aluminum windows maintain their appearance for 30+ years.

Start a Conversation Today

We manufacture windows and doors without limits. Contact DERCHI for a free consultation and custom quote on premium aluminum windows and doors for your Japanese project.

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