Function & application:Pressure protect switch. It is widely used on pressure protect of gas pipeline.

功能及用途：压力保护开关。广泛应用于各种气体压力保护。

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Companies, under increasing pressure to protect their profits, will focus more attention on white-collar productivity.

ECONOMIST: Business

But as these economies face their most severe recession in more than three decades, governments are coming under pressure to protect the jobless.

ECONOMIST: Asia goes on the dole

The Philippine government is also coming under pressure to do more to protect the Filipino clan.

BBC: Malaysia soldiers attack armed Filipino clan in Borneo