How to measure the resistance of air filter
When the air filter filters dust, it will cause airflow resistance. According to the current industry usage habits, air filters mainly have two types of resistance: initial resistance and final resist…
How to measure the water reducing rate of aliphatic water reducing agent
At present, the commonly used water reducing agents in China are naphthalene series, melamine series, sulfamate and aliphatic. Although the water reduction rate of naphthalene series and melamine seri…
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