Safety valve and relief valve definition and difference
Biological Virgin Pulp Making System
The lack of paper
making raw materials is a common problem, the use of seasonal growth plants or
wild trees etc for the paper pulp is an effective solution.However, using this
material pulping will produce a lot of black liquor containing inorganic
compounds, how can get more fiber pulp, low investment to processing black
liquor which can let it reach the water
recycling or reach the discharge standard of environmental protection, it has
been a worldwide problem all the time.
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