Those wood blocks we bought are imported from abroad and have been done drying treatment before leaving factory. Why do we still need to dry them again? This is because there are much water vapor in the air, especially for southern areas whose humidity is very high. During transportation and storage process, there will be plenty of water vapor entering into the wood. Therefore, we need do secondary drying process on those wood blocks in order to contol the humidity within the specified standard.
The moisture inside the wood should be discharged by fumigation or high temperature drying method in order to reduce the moisture content to no more than 10% to 12%. The national moisture content standard is 12%.