Lacquer

Also known as mountain lacquer, it is distributed in the area of Zhongtiaoshan in Pinglu. The annual output of lacquer per tree is about 0.5-1 kg. After cutting once, it will take three years to re-cut. The raw lacquer cut from the lacquer tree is the king of coatings, which is called black gold, which is more expensive than gold. The export of one ton of raw lacquer is worth more than 10 thousand dollars. This lacquer contains 7.67% gum, 25.29% water, 61.34% urushiic acid and 5.7% nitrogen. Adding a certain amount of fillers, such as porcelain powder, quartz powder and graphite powder, to the raw lacquer, the binding force between the raw lacquer and the steel plate is as high as 70 kg per square centimeter. After the raw lacquer is made into mature lacquer, it is a high-quality coating for military industry, chemical industry, electrical equipment and non-metallic products such as bamboo and wood. It can also be used as an antiseptic and moth-proofing agent for works of art. The wood of lacquer wood is not easy to decay, moisture-resistant, elastic and beautiful in pattern, which can be used to make high-grade wood products. Its leaves are blindly Chinese medicine, and its seeds can be used to extract edible oil.
Reprinted with attribution： https://cnlocality.com/(Chinese Specialty Products)