INTERIOR DOORS

At OPPEIN Home, we combine precision engineering with sophisticated design. Our interior doors are not just entrances – they are solutions for quieter living spaces, durable performance, and harmonious interiors. All our interior doors are manufactured under ISO9001 quality management and ISO14001 environmental management standards, ensuring responsible sourcing, reliable production, and long-lasting quality.

Quality Upgrade: Stronger Panel, Better Performance

We’ve increased the tubular door core thickness from 40mm to 45mm. This upgrade delivers:

• Enhanced thermal insulation
• Superior noise reduction
• A solid, high-density structure that effectively blocks outside noise

360° Noise Insulation – Keep Quiet, Get Comfort

Every OPPEIN interior door is designed to create a peaceful environment. Our quiet technology includes:

• Magnetic side seal on the door panel
• PLANET drop-down seal for complete sound shielding
• AGB magnetic lock – smooth and silent operation
• Silent door stop for noiseless closing
• Invisible screwed hinges (3 hinges per door) for stability and quiet movement

Double Damping – Standout Innovation

A unique top and bottom damping design sets our doors apart. Benefits include:

• Smooth opening and closing
• Anti‑bumping protection
• Pinching prevention
• Additional noise insulation

Door‑Wall Integration – Seamless Beauty

Our invisible door system creates a flush, seamless connection between the door and wall. Key features:

• 54mm invisible door thickness with integrated edge banding
• Invisible hinges – door and wall surfaces are perfectly flat
• 10mm thicker door panel with side seals for quiet operation
• Easy‑assemble structure with wood plugs – sturdy and durable

Exquisite Design – Sophisticated Look

OPPEIN interior doors also serve as elegant design elements:

• Intricate carving art for understated elegance
• Sophisticated carving patterns create a seamless transition between doors, walls, and cabinets
• Harmonious color matching – door panel, frame, cabinet front, and wall panel in the same tone for ultimate visual harmony

Choose OPPEIN interior doors for 45mm solid panels, 360° quiet sealing, double damping innovation, seamless wall integration, and exquisite craftsmanship – all backed by ISO‑certified quality.

Swing Door for Sale
As one of the most interior door types in daily life, the swing door is the most popular one in house decoration. Our learning starts from knowing the swing door. OPPEIN's custom swing wooden doors for sale are divided into single door, unequal double door and double door. You can select different installation methods according to the size of the apartment and living habits and other factors. In terms of material selection, there are a wide range of options for swing doors. Common solid wood doors, composite solid wood doors, etc. can be used as materials for swing doors.
Sliding Doors for Sale
A sliding door is a kind of internal door commonly used in households, which refers to a door that can be pushed and pulled. Sliding interior doors originated in China. With the development of technology and the diversification of decoration methods, sliding interior doors have changed from traditional sheet surfaces to glass, fabric, rattan, and aluminum alloy profiles. From sliding doors, folding doors to partition doors. The function and scope of use of sliding doors are constantly expanding. OPPEIN is one of the best sliding interior door suppliers in China. In OPPEIN, you can choose sliding door customization of different sizes, multiple doors, and different materials for you to choose from.

Solid Wood Interior Doors for Sale
OPPEIN's titanium-magnesium alloy interior doors are made of TC4 alloy and processed through advanced technology. Our custom door wholesale is made of 1.2mm magnesium-aluminum alloy material, which has high strength, low density and anti-deformation. The titanium component of the alloy material is a special material for aviation, which is resistant to acid and alkali and corrosion. Magnesium is a heat-dissipating metal and is the preferred interior door material for balconies and kitchens. The surface of the alloy door is a German treatment process, which will not fade or oxidize.
Solid Wood Composite Door for Sale
The solid wood composite door is made of two or more different wood species and processed by advanced technology. OPPEIN's customized doors are all made of top German imported Sauerland bridge hole mechanical panels. Combining natural veneer, baking paint, high resistance board and other materials for veneer processing. OPPEIN's solid wood composite doors have various shapes, rich styles and various decorative styles. Consumers have broad choices. In addition, the solid wood composite door is dimensionally stable and not easy to deform and crack.
Titanium Magnesium Alloy Door for Sale
OPPEIN's titanium-magnesium alloy interior doors are made of TC4 alloy and processed through advanced technology. Our custom door wholesale is made of 1.2mm magnesium-aluminum alloy material, which has high strength, low density and anti-deformation. The titanium component of the alloy material is a special material for aviation, which is resistant to acid and alkali and corrosion. Magnesium is a heat-dissipating metal and is the preferred interior door material for balconies and kitchens. The surface of the alloy door is a German treatment process, which will not fade or oxidize.
Armored Door/Security Door for Sale
The armored door has a steel core structure within a wooden panel. It is a security door with the textured appearance of a wooden door and the sturdy nature of a steel door. The armored door has excellent fire protection, thermal insulation and sound insulation functions. The door is equipped with a smart cat's eye: it can display outdoor visitor scenes indoors, can be linked with mobile phones, and can record and save visitors. The lock used by OPPEIN's armored door is Huitailong smart entry door lock: it can be connected with the smart cat's eye network, remote notification, and remote unlocking. The lock can also realize fingerprint, password, IC card unlocking. Different armored doors for indoor and outdoor use are available in different colors. As an excellent interior door manufacturer, OPPEIN wohlesale interior doors that look good and durable. Let us add high-quality details to your home. If you are looking for Chinese door factories, contact us now!

Looking for bedroom doors for sale? You're in the right place! As the top Interior door supplier in China, OPPEIN offer modern custom interior door wholesale in high quality. Our company has grown through the years and improved so much when it comes to the interior door types, styles, color, and configuration. If you look for Chinese doors for sale or look for interior door manufacturers in China, OPPEIN will be your best choice. We wholesale door around the world, you just need to tell us what you need. Please check out the following room doors for sale in OPPEIN.