Garden Wood Charcoal

Specifications Details
Size Diameter Φ 30 – 120 mm, Length 70 – 2
0 mm
Shape Lump and natural stick
Fixed Carbon > 65%
Calorific Value > 6500 kcal/kg
Ash Content < 5%
Moisture < 5%
Burning Time ~ 3 hours
OEM: Customized dimensions are available upon customer request.

Packaging

• PP/BOPP Bags: 10 – 25 kg 
• Paper Bags / PP Bags: 3 – 8 kg 
• Carton Boxes: 3 – 10 kg 

OEM Service: Support logo printing and packaging design under customers’ private label requirements.

Supply Information

• Supply Capacity: 200 MT/month 
• Loading Capacity: 22 – 24 MT/40’HC (standard bag loading) 
• MOQ: 1 × 40’HC container 
• Payment Terms: TT (30% deposit) or L/C at sight 
• Delivery Time: Approximately 15 days 
• Loading Port: Ho Chi Minh Port, Vietnam 

Preferred Markets: Middle East, South Asia, and markets that prioritize competitively priced natural wood charcoal.

Garden wood used for charcoal carbonization in Vietnam is mainly collected from periodic pruning activities, orchard renovation, replacement of aging or low-yield fruit trees, and conversion to higher-value agricultural crops. This raw material represents a natural agricultural biomass source generated through the continuous maintenance and reinvestment cycle of fruit farming.
The raw material consists of a mixture of different fruit tree and garden wood species such as durian, rambutan, sapodilla, soursop, pomelo, dragon fruit, jackfruit, wampee, and other local fruit trees. The actual composition may vary depending on seasonality, cultivation regions, and orchard renewal cycles.
The main sourcing region is concentrated in the Mekong Delta (Southwestern Vietnam) — the country’s largest fruit-growing region, with approximately 370,000–404,000 hectares of fruit cultivation area and annual fruit production of around 6 million tons. This region is well known for its extensive orchard systems, fertile alluvial soil, and tropical climate conditions that support year-round fruit cultivation.
Because fruit trees generally have long productive life cycles but require periodic pruning and replanting to maintain yield and orchard efficiency, a relatively stable supply of wood biomass is generated every year. Most of this biomass is not suitable for value-added applications such as furniture manufacturing or construction and is therefore commonly utilized as feedstock for charcoal carbonization, creating additional value from agricultural by-products.
After collection, the wood materials are freshly cut and processed into lump or stick forms with an average length of approximately 500 mm and diameters ranging from 50–150 mm. Dry, decayed, or unsuitable wood sections are removed before entering the carbonization kilns to ensure more stable finished charcoal quality throughout the production process.

Packaging

• PP/BOPP Bags: 10 – 25 kg 
• Paper Bags / PP Bags: 3 – 8 kg 
• Carton Boxes: 3 – 10 kg 

OEM Service: Support logo printing and packaging design under customers’ private label requirements.

Supply Information

• Supply Capacity: 200 MT/month 
• Loading Capacity: 22 – 24 MT/40’HC (standard bag loading) 
• MOQ: 1 × 40’HC container 
• Payment Terms: TT (30% deposit) or L/C at sight 
• Delivery Time: Approximately 15 days 
• Loading Port: Ho Chi Minh Port, Vietnam 

Preferred Markets: Middle East, South Asia, and markets that prioritize competitively priced natural wood charcoal.

Overview
Natural wood charcoal is produced from suitable wood species (typically wood materials with limited value for advanced wood processing applications) such as Mangrove, Longan, Eucalyptus, Coffee Wood, Khaya, and various orchard wood species through a carbonization process under oxygen-limited conditions.
During this process, most moisture, natural oils, wood tar, and volatile organic compounds are removed, while the carbon content is retained to form natural charcoal.
The production process consists of multiple stages, including raw material preparation, carbonization, sorting, packaging, and quality inspection before shipment, ensuring that the final products meet technical requirements, commercial specifications, and international transportation standards.

Step 1. Raw Material Sourcing
Raw materials are selected from wood species suitable for charcoal production, including Mangrove, Longan, Eucalyptus, Coffee Wood, Khaya, and various orchard wood species.
Depending on the product category, the wood may originate from plantation forests, fruit orchards, or other appropriately managed raw material regions.

Step 2. Wood Preparation
The wood is cut into logs or billets suitable for the carbonization process. Typical dimensions are approximately 500 mm in length and 50–200 mm in diameter. Larger logs are further cut or split to achieve the required size range.
Standardizing the raw material dimensions helps improve carbonization efficiency and facilitates subsequent grading and packaging operations.
For charcoal production, freshly harvested wood is generally preferred, as it often produces stronger and more stable charcoal after carbonization.

Step 3. Kiln Loading
The prepared wood is loaded into the carbonization kilns manually or semi-manually.
Proper and uniform stacking ensures efficient heat and airflow circulation throughout the kiln during the production cycle while minimizing shifting, collapsing, or breakage of the material.

Step 4. Carbonization
This is the most important stage of the entire production process.
The kilns are designed with dedicated firing chambers that gradually increase the internal temperature through two main stages:
Stage 1 – Moisture Removal (150–200°C)
Free water and internal moisture are gradually removed from the wood. This stage essentially functions as a thermal drying process.
Stage 2 – Carbonization (350–400°C)
The temperature continues to rise, removing the remaining moisture, natural oils, wood tar, and volatile organic compounds. Under oxygen-limited conditions, the wood structure is gradually transformed into charcoal while the carbon content is retained to form natural wood charcoal.
Depending on the wood species, kiln design, kiln size, and environmental conditions, the carbonization process typically takes between 4 and 6 weeks.
This is the most important stage of the entire production process.
The kilns are designed with dedicated firing chambers that gradually increase the internal temperature through two main stages:
The average charcoal recovery rate ranges from approximately 18–25%, meaning that every 100 kg of raw wood typically yields around 18–25 kg of finished charcoal.

Step 5. Natural Cooling
After carbonization is completed, all kiln openings are completely sealed, allowing the charcoal to cool naturally. This is the final stage of the carbonization process.
Natural cooling helps stabilize the charcoal structure, minimize cracking, and prevent re-ignition when exposed to oxygen. The cooling period typically lasts between 1 and 2 weeks, depending on kiln size and construction.

Step 6. Sorting & Grading
After unloading from the kiln, the charcoal is sorted according to size, shape, and quality.
Products that do not meet the required standards, such as partially carbonized or under-carbonized pieces, are removed or reprocessed when appropriate.

Step 7. Processing & Packaging
Depending on customer requirements, the charcoal may be cut, split, crushed, or cleaned to remove any remaining bark before packaging.
Products are packed in PP bags, BOPP bags, paper bags, cartons, or other packaging formats according to customer specifications and target market requirements.

Step 8. Quality Control
Each production batch undergoes quality inspection before shipment.
Quality verification may include combustion testing after kiln unloading and laboratory analysis when requested by customers.
Inspection criteria typically include charcoal type, size, moisture content, hardness, and packaging specifications according to internal standards or customer requirements.

Step 9. Warehouse Storage
After packaging, finished products are stored for a minimum of 7 days in dry and well-ventilated warehouse conditions to ensure fire safety and maintain stable product quality prior to shipment.

Step 10. Container Loading & Export
Products are loaded into containers according to packaging specifications, customer requirements, and international maritime transportation standards.
After final inspection, the cargo is transported to the port and exported under the agreed international trade terms.