Does this stone roll be basalt? How many years have you been expecting the wear of this stone?
No, basalt is the product of volcanic eruption of lava cooling. There are basalts where there may be volcanic eruptions nearby, or after thousands of years of external force, such as handling, sedimentation and so on. Thank you, hope to adopt!
Granite may be relatively large.
??????? Because the basaltic density is higher than the granite, the mineral crystal grain is small, looks more delicate.
This is not a roller, called stone. Should have some years, because the production of stone, will not do so thin, is the use of years,
??????? After wearing the remaining 8 cm. You are grinding the fan, there should be the next fan.
??????? This is a common civilian daily life appliances, the world is very high.
