Thermal (Isolated) Blocks usually produced in high volume in Middle East.
This time ( also caused of the warming of the earth) come more popular in China
Mainly there are two possibilities of production:
1)The Polystyrol will be moved in the concrete machine by a support sheet and is a part of the block while production
2)The mould have cores - like masonary-block and the Polystyrol will be fitted afterwards ( This version is used if the machine is not able to do like 1))
Test : See this link for movie
This Link showes Pictures out of production, customer und Projects
This Link showes video of production