According to the national standard GB/T 18107-2000 "Redwood" released by the State Bureau of Quality and Technical Supervision on May 19, 2000, the redwoods are divided into 8 categories. The necessary conditions are as follows:
First, rosewood class 1. Pterocarpus tree species.
2. The wood structure is very fine to fine, and the average tube hole chord diameter is no more than 160 microns.
3. When the wood moisture content is 12%, the air dry density is greater than 1.00 g/cm. The heartwood of the wood, the color of the red and purple, turned black and purple for a long time.
Second, rosewood 1. Pterocarpus tree species 2. The wood structure is very fine to fine, and the average tube hole chord diameter is no more than 200 microns.
3. The air dry density is greater than 0.76 g/cm3 when the wood moisture content is 12%.
4. The heartwood of the wood is reddish-brown to purple, often with dark stripes.
Third, fragrant wood
1. Dalbergia tree species.
2. The wood structure is very fine to fine, and the average tube hole chord diameter is no more than 120 microns.
3. When the wood moisture content is 12%, the air dry density is greater than 0.80 g/cm3.
4. The heartwood of the wood, the spicy aroma is rich, the color is reddish brown.
Fourth, black rosewood
1. Dalbergia tree species.
2. The wood structure is very fine to fine, and the average tube hole chord diameter is no more than 200 microns.
3. When the wood moisture content is 12%, the air dry density is greater than 0.85 g/cm3.
4. The heartwood of the wood, the color of the chestnut brown, often with black stripes.
Five, red rosewood
1. Dalbergia tree species.
2. The wood structure is very fine to fine, and the average tube hole chord diameter is no more than 200 microns.
3. When the wood moisture content is 12%, the air dry density is greater than 0.85 g/cm3.
4. The heartwood of the wood is reddish brown to purple.
six. Ebony
1. Diospyros tree species.
2. The wood structure is very fine to fine, and the average tube hole chord diameter is no more than 150 microns.
3. The air dry density is greater than 0.90 g/cm3 when the wood moisture content is 12%.
4. The heartwood of the wood is black.
Seven, striped ebony
1. Diospyros tree species.
2. The wood structure is very fine to fine, and the average tube hole chord diameter is no more than 150 microns.
3. The air dry density is greater than 0.90 g/cm3 when the wood moisture content is 12%.
4. The heartwood of the wood, black or chestnut brown, with light stripes between them.
Eight, chicken wing wood
1. Trees of the genus Millettia and Cassia.
2. The wood structure is very fine to fine, and the average tube hole chord diameter is no more than 200 microns.
3. When the wood moisture content is 12%, the air dry density is greater than 0.80 g/cm3.
4. The heartwood of the wood is dark brown to chestnut brown with a chicken wing pattern on the chord.
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Brand Name: Jinao
Place of Origin: Guangdong, China(mainland)
Surface Material: Customized
Inner Material: Velvet / foamed plastic
Color: Customized
Size: Multi-size + Customized
Feature: delicate / decorative
Logo Printing: Customized
Usage: Jewelry Box / Gift Box
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