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Chapter 853 Developed cement
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Chapter 855 big stone small stone
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... ng Wen feels that he will not concentrate on his work.
"Cement is made of limestone, clay, and iron ore finely ground and mixed according to the proportion, then calcined, and then mixed with gypsum to form cement. This thing has a lot of uses. The tallest building in Qiaocheng knows it. "
(I checked the cement production method on Baidu, I don’t know if it’s true or not, so don’t get too entangled. Hehe!)
Lifting the cement, Joey's eyes lit up.
"Um."
...
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