Letterbox Manufacturer from China – Metal Letterboxes Direct from Hongmao Garden
China’s TOP1 Letterbox Manufacturer for the European Market
Hongmao Garden is recognised as one of China’s TOP1 letterbox manufacturers for the European DIY and garden market. We design and produce durable metal letterboxes, parcel letterboxes and combined systems for leading DIY chains, online retailers and brands in Germany and across Europe.
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Galvanised steel with premium powder coating
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Tested for European weather: salt spray, UV, IPX water tests, drop tests
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OEM/ODM, private label and full range development from manageable MOQs
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Up to 10 years outdoor lifetime, 100+ patents, TÜV & BSCI audits
Why Hongmao Garden? – Your No.1 Letterbox Manufacturer in China
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China TOP1 letterbox manufacturer for garden & DIY
Focused on outdoor metal products: letterboxes, parcel boxes, wheelie bin boxes, garden storage boxes and raised beds. All ranges are engineered specifically for European requirements. -
Own factory in the established metal cluster of East China
Our production plant is located in Taizhou, Zhejiang – one of China’s core metal processing regions. Short distances to steel, coating, hardware and packaging suppliers secure stable quality, short lead times and competitive prices. -
Certified production & compliance
BSCI, TÜV ISO 9001, SMETA and Environmental Impact Assessment (EIA) ensure that our factory meets the strict compliance standards of European DIY chains and brands. -
Engineering & testing to European standards
UV ageing, salt spray, IPX water tests, drop tests, load tests for locks and hinges – all key tests are carried out in the prototype stage and repeated during serial production. -
Long-term partnership instead of one-off projects
Many German and European customers have worked with us for years. For key accounts we operate exclusive tooling, safety stocks and annual cost-optimisation programmes.
Metal Letterbox Programme
Metal Letterboxes for Home, Garden and Parcel Delivery
Hongmao Garden develops complete metal letterbox programmes tailored to different sales channels.
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Wall-mounted Letterbox series
We have created a highly practical and functional wall-mounted letterbox range with multiple designs, colours and materials. All models are patent-protected in China, Germany and the EU. Our own designs are already installed in more than one million households in Germany.
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Letterbox Series Overview (for the EU Market, EN 13724 Compliant)
All series are designed according to EN 13724 and optimised for wall or free-standing installation in outdoor areas.
Size (W×D×H, cm)
37 x 11 x 37
Material
Galvanized steel, powder-coated
Installation type
Wall mounting/fence mounting/stainless steel frame
Plate thickness
1.0/0.8/0.6±0.09mm
Accessories
Plastic lock cylinder, galvanized sheet metal screws, key, wall plugs
Patent
CN/DE/EU
Customisation options
Door panel color/wood grain look/exterior design
Door panel material (stainless steel/Plexiglas)
Tested & Certified for European Outdoor Conditions
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Design according to EN 13724 – all letterboxes are engineered to meet EN 13724 for volume, mail slot, protection against rain and unauthorised access.
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Salt spray test – ≥ 96 h (higher on request) to verify corrosion resistance.
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UV ageing – ≥ 1,000 h (significantly higher for selected programmes) to secure long-term colour and gloss stability.
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IPX water tests – up to IPX6 depending on the model, suitable for heavy rain and wind-driven rain.
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Drop tests – packaging and products pass repeated drop tests from different heights.
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Powder adhesion (cross-cut test) – ISO-0, no flaking of the coating.
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REACH-compliant coating – all powders comply with the relevant EU regulations.
These tests are carried out during development and on random samples from serial production to ensure up to 10 years of outdoor lifetime.
Engineering & Manufacturing – How Long-lasting Metal Letterboxes Are Made
To avoid complaints about rust or coating defects, we deliberately go beyond common industry standards.
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Use of hot-dip galvanised steel sheet or high-grade galvanised steel with thick zinc layers.
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All edges are deburred after laser cutting, punching and bending to avoid sharp edges and coating failures.
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Optional stainless steel components (e.g. handles, lock covers) for highly exposed areas.
Sustainability & Low-carbon Production
Sustainable Production for the European Market
Sustainability is an integral part of our manufacturing philosophy:
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High material efficiency – in-house automation achieves a raw material utilisation rate above 95%; off-cuts are systematically recycled.
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Renewable energy – a large proportion of our electricity demand is covered by our own solar power system (approx. 800,000 kWh per year).
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Eco-friendly coatings – solvent-free powder coatings, no chromate-based pretreatments.
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Plastic-free packaging – no EPS foam; we use PEP foam, honeycomb board and reinforced cardboard instead.
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Transparent CO₂ data – TÜV issues quarterly carbon emission reports at factory level, helping customers to calculate CBAM costs and reduce their total footprint.
Fully Assembled & Safely Packed
Our letterboxes are optimised for international shipping and e-commerce.
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Fully assembled – no complicated on-site assembly; letterboxes are delivered ready to install.
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Protective PEP packaging – eco-friendly all-round protection reduces transport damage.
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Clear labelling – each shipment includes detailed instructions and clearly marked accessories for easy installation.
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Storage & shipping optimised – standardised carton sizes for pallet shipping and efficient warehouse handling.
OEM/ODM & Project Process for European Customers
OEM/ODM & Project Process for European Customers
For brands, wholesalers and DIY chains we handle the full development of new letterbox programmes.
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Define target market, price point and packaging concept
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Select reference products / benchmarking and create first 3D designs
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Fix material thickness, lock type, coating and accessories
FAQ
As one of China's leading manufacturers and exporters of metal mailboxes and parcel boxes, Hongmao Garden boasts over 20 years of experience. We offer weatherproof mailbox and parcel box systems made of galvanized steel with a durable powder coating, available in various configurations such as wall-mounted or freestanding models. Our production is BSCI and ISO9001 certified, enabling flexible OEM/ODM solutions, consistently high quality, and reliable delivery times for the European market.
