Chapter 91: Papermaking Ice-Making Method

is calcium sulfate, but raw gypsum and calcined gypsum are completely different. When firing gypsum, the temperature must be controlled and not too high. The suspension is then used...Only these condi...It is now the middle of the month.

The night was deep, a round moon hung high in the sky.

Inside the Yang family home, everyone sat together, watching Xiao Jiu calculate. it go That Yang Lin is not so easy to bully anymore!"Liu Liang hurriedly explained, "Father, last time I wasn't prepared. Don't worry, this time I'm ready.""We'll send people tonight to wreck his wat...