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Operation instructions：
☆This product belongs to the pressure goods, can't analyze , forbid colliding and beating .
☆Pay attention to installing the direction, can't invert .
☆In order to guarantee airtight dependability, can't destroy the cylinder rod surface , forbid applying the paint and chemical material,etc. on the cylinder rod.
☆Use environmental temperature：-35℃～+60℃。（Make specifically 80℃）
☆Install and unite the contact, should rotate flexibly , there can't be the card and hinder the phenomenon.