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Heavy duty semi trailer prices

If you are looking for a custom trailer manufacturer and factory. Then the actual price of a trailer depends on the features and configurations you want to customize. The more special and complex the customized function,...

Cationic polyacrylamide production procedure

PAM for short, the structural formula is [- CH2-CH( CONH2)] N -, the molecular weight in between 4-20 million. Polyacrylamide primarily has 2 kinds of product forms, one is the look of white or slightly yellow powder, so...
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