Roots rotary piston vacuum system in the application of polycrystalline silicon solar cell industry
Posted on Thu, 24 May 2018 07:40:52 +0000
Polycrystalline silicon, polycrystalline silicon photovoltaic materials, is a kind of important polysilicon ingot furnace requires extreme pressure inside the furnace should also have a smoke to less than 1 Pa, vacuum unit is roots pump and a single-stage rotary piston vacuum pump, roots and pi...
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