Key Advantages of Our Carbon Crystal Doors
- Better sound insulation at the same price point.
- Higher door leaf solid-content ratio at the same price point.
- Available Face Panel Thicknesses: 4 / 6 / 8 / (4+8) mm.
- Good door leaf surface flatness.
Why Choose Wanbaoyijia as Your Carbon Crystal Door Supplier?
- Multiple factories for different Carbon Crystal Door orders.
- Automated equipment helps improve consistency in bulk production
- Support different Carbon Crystal Door types and processing requirements
- 100+ Existing Colours and Designs for Faster Project Matching
- Help confirm a suitable Carbon Crystal Door configuration based on the project budget
- Produce physical samples based on drawings and renderings
Wanbaoyijia Carbon Crystal Door Leaf and Frame Structure
Wanbaoyijia Carbon Crystal Door leaves are made with carbon crystal face panels, a solid timber skeleton, particleboard and graphite homogeneous board. The standard door leaf thickness is 50 mm and can be customised from 40–60 mm. A standard-size door leaf weighs approximately 35 kg.
The door frame uses a solid timber structure and can be made from solid timber or rubberwood. The standard thickness is 30 mm and can be customised from 30–45 mm for bulk orders. A standard-size door frame weighs approximately 12–15 kg.
The standard architrave uses a multi-layer plywood structure, with a thickness of 10 mm and a width of 68–70 mm. A 2.2 m-long architrave weighs approximately 4 kg.
If you are sourcing Carbon Crystal Doors, you can provide your project drawings, quantity, required finish and target budget. We will confirm the structure according to your project requirements and prepare a quotation.
Popular Carbon Crystal Door Designs
Carbon Crystal Door projects can use single doors, unequal double doors and double doors, with different wood-grain colours and decorative designs. Common options include flush designs, metal inlays and glass vision panels.

Simple decorative details keep the overall door leaf appearance clean and modern.

Slim vertical inlays and a small geometric detail in the centre of the door leaf add some design detail while keeping the overall appearance simple.

The simple design has minimal decoration, allowing the wood-grain finish to stand out more clearly.

A square glass vision panel is added to the main door leaf, while the overall design remains relatively simple.

Several slim gold-colour vertical inlays are added to give the door leaf a more decorative appearance.

Slim rose-gold vertical inlays are combined with simple horizontal lines. The metal decoration adds a warmer detail to the grey door face.

The door uses a simple flush design with minimal decoration. The symmetrical double-leaf configuration gives it a neat overall appearance.

Both door leaves are fitted with slim vertical glass panels. The glass adds visual detail while keeping the overall design symmetrical.

Each door leaf is fitted with one slim glass vision panel. The symmetrical glass layout gives the door a clean and orderly appearance.
Carbon Crystal Doors by Face Panel Thickness
For different Carbon Crystal Door projects, you can select different face panel thicknesses according to your project requirements, budget and product specifications.
4 mm Economy Carbon Crystal DoorUses a 4 mm carbon crystal face panel. This is the economy configuration and is suitable for projects where procurement cost control is the main consideration.
6 mm Standard Carbon Crystal DoorUses a 6 mm carbon crystal face panel. This is the standard configuration and is suitable for most residential, apartment and commercial projects.
8 mm High-Spec Carbon Crystal DoorUses an 8 mm carbon crystal face panel and is suitable for projects with higher requirements for face panel thickness and sound insulation.
4+8 mm Highest-Grade Carbon Crystal DoorUses a composite structure of a 4 mm carbon crystal board and an 8 mm solid wood board, suitable for luxury projects.
What to Confirm Before Ordering Carbon Crystal Doors
Before preparing a quotation or starting production, we will confirm your project drawings, door specifications, face panel configuration, finish, design, quantity and production schedule with you, helping you obtain a more accurate quotation and reduce later changes.

Please provide the required door dimensions and project drawings. We will confirm the dimensions according to your project requirements to help reduce specification mismatches.

Please confirm the required door types and any special design requirements so that we can prepare the production plan according to your project.

We will confirm a suitable face panel configuration according to your project requirements and budget.

The standard door leaf thickness is 50 mm. For bulk orders, 40–60 mm can be customised, allowing you to select a suitable door leaf thickness according to your project specifications.

You can choose a solid timber or rubberwood door frame according to your project requirements. Confirming the specifications in advance can help you better match the site wall and door opening requirements.

Please confirm the required colour and whether you need a Melamine or PET finish before quotation.

Please tell us the required quantity before quotation. Once the order quantity is confirmed, we can customise the products more accurately according to your requirements.

Please tell us your required delivery time. If your delivery schedule is tight, we can arrange overtime production as appropriate.
Advantages of Our Carbon Crystal Doors
The following comparison mainly refers to ordinary Carbon Crystal Doors with multiple narrow strip fillers inside the door leaf, helping you understand how different internal structures affect product selection and use.

The door leaf uses a solid timber skeleton, particleboard and a central graphite homogeneous board for better structural stability.

At the same price point, this structure has a higher door leaf solid-content ratio than an ordinary strip-filled structure, allowing you to obtain a more substantial door configuration within a similar budget.

The higher solid-content ratio gives the door leaf a more substantial feel when opening and closing, giving the end user a better sense of door solidity.

Better flatness control helps reduce the risk of visible local bulging on finished door leaves, especially in bulk orders.

If sound insulation is important for your project, this structure gives you another option to consider within a similar procurement budget.

Considering price, sound insulation, door leaf weight and production lead time together, this configuration can help you achieve a better balance between project budget and product performance.
Combined Filling for Better Sound Insulation
To provide structural support and add weight to the door leaf, we use a solid timber skeleton around the perimeter, with particleboard and a large graphite homogeneous board inside.
At the same price point, this structure can achieve a door leaf solid-content ratio of approximately 80%. Compared with ordinary Carbon Crystal Doors using multiple strip fillers, sound insulation performance can improve by approximately 5%–8%. For hotel, apartment and residential projects, this provides better sound insulation at a similar cost.
Reduce the Risk of Surface Unevenness
When an ordinary Carbon Crystal Door uses a large number of narrow strip fillers inside the door leaf, the thickness and height of each filler need to be kept as consistent as possible. In actual production, if one filler is slightly higher than the others, local bulging may form at the corresponding position after pressing, affecting the flatness of the finished door leaf.
Our current method is to use a large graphite homogeneous board in the centre of the door leaf, reducing the number of independent filler strips in the central area. With fewer independent filler strips, there are fewer positions where height consistency needs to be controlled separately, which can reduce the risk of local bulging caused by differences in filler height.
According to our actual production statistics, compared with Carbon Crystal Doors using strip fillers throughout, this structure can reduce the door leaf surface unevenness rate by approximately 50%–75%.
Carbon Crystal Door Selection, Comparison and Installation Resources

View different Carbon Crystal Door designs, colours, wood-grain effects, finishes and face panel configurations to help you quickly shortlist suitable options for your project.

This comparison sheet can help you compare key specifications from different suppliers, including carbon crystal board thickness, internal filling, door leaf thickness, door frame and finish. Comparing different quotations item by item makes it easier to determine which configuration is more suitable for your project.

The video will show the main Carbon Crystal Door installation steps, including door frame assembly and architrave cutting. It can be used as a reference and training resource for your project site and company installation staff.
Custom-Developed Graphite Board for Carbon Crystal Doors
Wanbaoyijia works closely with our raw material supplier and jointly developed the graphite homogeneous board used inside our carbon crystal doors. The board specifications are customised according to our door leaf thickness and internal structure, rather than using only standard market specifications.
The supplier also provides test data for key properties such as compressive strength, moisture resistance and formaldehyde emission. Because this material was developed around our actual carbon crystal door structure, it can better match the solid timber skeleton and particleboard. This configuration has been used for many years and has received good customer feedback.
For you, this means you are using a configuration that we have produced and used for many years, rather than a new solution that has not been tested in actual projects. This can help reduce the risk in bulk purchasing.
Carbon Crystal Door Solutions for Different Project Requirements
Different projects have different requirements for Carbon Crystal Doors. Some customers focus on colour matching, while others place more importance on sound insulation, water resistance or appearance. The following real cases show how we adjusted the materials, structure and surface design according to the customer’s project conditions and actual requirements, helping them obtain a Carbon Crystal Door solution better suited to their project.

For a project in Thailand, the customer reviewed the colours we provided but could not find a suitable option. We checked the customer’s project design rendering and confirmed the required order quantity, then decided to have our decorative panel factory customise the colour separately. After detailed communication, we received a decorative panel with a colour very close to the customer’s rendering within 3 days. With expedited production, the sample was dispatched within 12 days.

For a project in Hong Kong, the customer liked the colour of our Carbon Crystal Door but also wanted better sound insulation. We therefore replaced the graphite homogeneous board with a solid wood sound-insulating board and upgraded the door leaf sound insulation system. This improved the sound insulation performance of the complete door set by approximately 15%. The wooden doors have now been installed, and the customer is satisfied.

For an apartment project in Egypt, the customer wanted the interior colours to remain consistent, so the bathroom door leaf needed to match the colour of the bedroom door leaves. After understanding the requirement, we recommended a water-resistant face panel from our Carbon Crystal Door range. Our water-resistant face panel has better water resistance than ordinary MDF. The customer has now installed one water-resistant Carbon Crystal Door and is carrying out detailed testing.

For one of our hotel projects in China, the customer wanted a more fashionable Carbon Crystal Door. They felt that a plain flush design was too simple and did not like the designs we initially provided. After detailed discussion, we proposed a Carbon Crystal Door with aluminium inlays. Gold-colour aluminium inlays were combined with a black lever handle on rose with a separate escutcheon, giving the complete Carbon Crystal Door a fashionable and modern appearance.
Carbon Crystal Door Factory Visits
Customers visit our factory to see the workshop and how we make doors.
A visitor talks with our team over tea in the office.
Visitors compare colour and finish samples with our team at the table.
Carbon Crystal Door Buying Guide for Interior Projects
This guide helps you quickly review the main Carbon Crystal Door specifications and understand what needs to be confirmed before ordering, during installation and after delivery.
- Product Details
- After-Sales Service
- Product Specifications
View the product detail images: carbon crystal face panels, solid timber skeleton, particleboard, graphite homogeneous board, door frame, architrave and the finished appearance of Carbon Crystal Doors.
- If you find transport damage, surface damage, incorrect dimensions or other visible problems after receiving the Carbon Crystal Doors, please keep the relevant photos, videos and order details and contact us before installation.
- Before installation, check the actual door opening dimensions, wall conditions and ordered door frame specifications. If there are any differences, confirm them before assembling the door frame or cutting the architraves.
- For installation, you can refer to the Carbon Crystal Door installation video for door frame assembly and architrave cutting. If a fitting problem is found, check the installation conditions before continuing with cutting or fixing.
Wanbaoyijia can adjust the Carbon Crystal Door configuration according to your project requirements. The following specifications are representative configurations shown on this page, and the final details need to be confirmed according to the approved order requirements.
Item | Specification | Item | Specification |
Product Type | Carbon Crystal Door | Application | Hotel / Apartment / Residential / Commercial Interior Projects |
| Face Panel Thickness | 4 / 6 / 8 / 4+8 mm | 4+8 Structure | 4 mm Carbon Crystal Board + 8 mm solid wood board |
Door Leaf Structure | Solid timber skeleton + particleboard + graphite homogeneous board | Door Leaf Thickness | 50 mm standard / 40–60 mm for bulk orders |
Door Leaf Weight | Approximately 35 kg for a standard-size door leaf | Door Frame Material | Solid timber / Rubberwood |
Door Frame Thickness | 30 mm standard / 30–45 mm for bulk orders | Door Frame Weight | Approximately 12–15 kg for a standard-size frame |
| Architrave Material | Multi-layer plywood | Architrave Size | 10 mm thick / 68–70 mm wide |
Surface Finish | Melamine / PET | Colour Options | Different colours and wood-grain effects / Custom colours for bulk orders |
Door Type | Single / Unequal Double / Double | Special Design | Glass / Arched / Sliding / Folding according to project requirements |
Project Information | Dimensions / Quantity / Drawings / Project Type | Reference Material | Drawings / Renderings / Reference Images |
| Required Delivery Time | Confirmed according to the project schedule | Final Configuration | Confirmed according to the approved order requirements |
Customer Feedback on Wanbaoyijia Carbon Crystal Doors
Not necessarily. The term Carbon Crystal Board is used for different engineered board structures in the market, so the name alone cannot fully identify the actual substrate and construction. The relevant face panels used for the Carbon Crystal Doors on this page have a black fibreboard-type substrate and belong to the MDF/HDF material family. When comparing products, you should confirm the actual substrate, face panel thickness and finish rather than relying only on the product name.
No. The 4 mm, 6 mm and 8 mm specifications refer to the face panel thickness, not the thickness of the complete door leaf. Our standard Carbon Crystal Door leaf is 50 mm thick, and 40–60 mm can be customised for bulk orders. The 4+8 configuration refers to a composite structure of a 4 mm carbon crystal board and an 8 mm solid wood board.
Not necessarily. Face panel thickness is only one part of the product configuration. The internal filling, solid timber skeleton, door frame, finish and actual project requirements also need to be considered. Therefore, a suitable face panel thickness should be selected according to the required project specifications and budget.
Yes. For the Carbon Crystal Doors shown on this page, both the door leaf and the door frame use carbon crystal board as the facing panel. Our door frame uses a solid timber structure, and the material can be solid timber or rubberwood.
Yes. Hinge selection should take the final door leaf size, weight and application into account. A standard-size Carbon Crystal Door leaf shown on this page weighs approximately 35 kg, but customised dimensions and different structures can change the actual weight. Therefore, the hardware should be confirmed according to the final door configuration rather than selected only according to the product name.
It depends on the configuration. Different Carbon Crystal Doors can use different face panels and structures, so the product name alone does not mean that all Carbon Crystal Doors are completely waterproof. Wanbaoyijia can provide water-resistant face panel options for projects such as bathrooms, but the final configuration still needs to be confirmed according to the moisture conditions of the project.
The main difference is the structure. Our Carbon Crystal Door uses a combination of carbon crystal face panels, a solid timber skeleton, particleboard and graphite homogeneous board, while a Solid Wood Door mainly uses solid wood as the door leaf material. Therefore, the two products should be compared according to their actual structures rather than appearance alone.
The Carbon Crystal Doors shown on this page are mainly intended for interior projects. If the door needs to be installed outdoors or in a directly exposed environment, the materials, structure and actual environmental conditions should be confirmed separately. A door should not be considered suitable for outdoor use simply because it is called a Carbon Crystal Door.
Not necessarily. Carbon Crystal Door is a product name, while MDF and HDF describe types of fibreboard materials. The carbon crystal face panels used for the products on this page are themselves HDF/fibreboard-type materials and belong to the MDF/HDF material family. When purchasing, it is more important to compare the actual substrate, face panel thickness, internal structure, door frame and finish rather than judging quality only by the product name.
There is no single fixed price for a Carbon Crystal Door. Door size, 4 mm / 6 mm / 8 mm / 4+8 mm face panel configuration, door frame, finish, design and order quantity can all affect the final quotation. After you provide your project requirements, the actual configuration can be confirmed before a quotation is prepared.
Not necessarily. Black is only an appearance characteristic of the board and cannot by itself determine whether it is Carbon Crystal Board. Different suppliers in the market do not always use the same definition of Carbon Crystal Board. Therefore, when purchasing, you should confirm the actual substrate, board thickness and surface finish rather than judging only by the colour.
Carbon Crystal Board, Melamine and PET are not the same thing. Carbon Crystal Board mainly refers to the board used for the door leaf, while Melamine and PET are surface finish options. When purchasing, the board substrate and surface finish should be confirmed separately to avoid treating them as the same material.
Yes. Even if two Carbon Crystal Doors have similar colours and external designs, their face panel thickness, internal filling, solid timber skeleton, door leaf thickness and door frame configuration may still be different. Therefore, for bulk purchasing, products should not be compared only by their images; the actual structure and specifications should also be confirmed.
Related Products
Plywood door sets combine plywood-faced leaves and matching frames with selectable semi-solid or solid-core structures.
Engineered wood doors use plywood faces and engineered timber construction for improved stability and moisture resistance.
Finger-jointed rubberwood solid wood doors provide substantial construction with natural texture and reduced warping risk.
Melamine doors provide wear-resistant decorative finishes and configurable cores for hotel, apartment and commercial projects.
Moisture-resistant doors use durable boards, reinforced edge sealing and stable finishes for humid interior environments.
Acoustic doors combine configurable leaf thicknesses and filling methods to balance sound control with project budgets.





































