Is the refrigerant changed once a year? Turn off the common misunderstanding of air conditioning

Do you think that air-conditioning refrigerant needs to be changed once a year? Do you think that the air conditioner in your home does not open for a long time? Do you still think that even if you turn on the air conditioner indoor air for a long time, you don't need to replace it? In fact, these are all wrong practical concepts, and these misunderstandings often make us make wrong judgments. this

SMT Stencil is made of stainless steel, and used for printing the solder paste on the SMT pads when do PCB Assembly job. Ours SMT stencil is high-precision Laser stencils which is OK for 0.3mm BGA PCB Assembly.

 

SMT Stencil could be framed SMT stencil and also could be un-framed SMT stencil.

 

 For un-framed SMT stencil, the biggest size is 280mm*380mm and the valid size is 190mm*290mm. And also the size could be customized if required, just ensure the stencil size is bigger than the PCB boards. Normally, un-framed stencil is used for PCB hand assembly or PCB Prototype assembly which is cheap and convenient.

 

For framed SMT stencil, it has many sizes could be chose and it`s always used for PCB automatic assembly or big quantity PCB assembly. It could be put on the auto solder paste print machine in the automatic SMT line.

SMT Stencil

SMT Stencil,Laser SMT Stencil,PCB SMT Stencil,Stainless SMT Stencil

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