The four largest nuts in the world are hazelnuts, walnuts, almonds and cashews. They have the same characteristics with each other. They have a hard exocarp, which contains oily edible seeds and is rich in nutritional value. The four major nuts in the world are all cultivated in China.

The macadamia fruit blooms and bears fruit in the 4th to 5th year, and reaches its peak in the 8th ~10 year. The fruiting period is 70 ~ 80 years, and the yield per mu is more than 3 10 kg.