Zhengzhou high tech Zone, China[email protected] 7*24 For you
180 million years ago . about 180 million years ago the supercontinent pangea began to break up. scientists believe that pangea broke apart for the same reason that the plates are moving today. the movement is caused by the convection currents that roll over in the upper zone of the.
If you want to learn about our products , please call or write mail consultation.