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  • Users: zhangw2008
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  1. zhangw2008

    What concentration of propylene glycol is dangerous?

    Hi,does anyone know the concentration of propylene glycol that will risk people's health? Thank you for any help?
  2. zhangw2008

    How pressure changes with time(solar water system)?

    Hi, this is my first thread. I need some help with my project. The situation is as follows: There is a leak of glycol from heating coil into the solar storage tank.The heating coil ruptures because the circulating pump stops. The whole system goes to stagnation.The high temperature and high...

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