A:the pressure controller not only used for with the fluorine turn hydrocarbon for lie a cold of quality system in, also can use in the air and the liquid. Two:the pressure controller allow of the liquid temperature scope is-45 ℃～s+120 ℃s. Three:novel tiny move the switch structure, insure the dependable conversion function of the switch. Four:clever gearing enclosure, applicably in various different gearing situations
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