as well as In the summer when the sun is direct, absorb a certain amount of heat, to prevent the softening of the waterproof material heat
The rock is the northern boundary of the granite zone.
The rock is weaker sericite, Which see a small amount of disseminated distribution of pyrite
and the plate is extremely developed in the rock. After weathered, it is 2-10mm flaky, and the surface is extremely characteristic
