Filler service life
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Our factory has just replaced the packing in the cooling water frame; the previous one had been in use for 6 years, and it had become degraded and brittle. Under normal circumstances, how often should the packing be replaced?
We’ve also used it for about 6 years; it’s covered in moss, and its heat exchange efficiency is poor
Oh my God, being able to use it for six years is great; our three years are already not enough