In 2004, there were 2 million TEU produced worldwide.
In the next year of 2006, there will be around 3 million TEU produce worldwide, of which will consume more than 2.5 million cubic meters of hardwood.
Using bamboo as majority alternative material instead of hardwood.
The major advantage is bamboo can grow back by itself. Then we can harvest again in 4-6 years time without replanting them. However, traditional hardwood take 60-70 years to grow and need replant taking another 60-70 years before you can harvest them.