Compression springs ;are coil springs that hold mechanical energy in their compressed states.
http://www.zhlspring.com/compression-spring/
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A Printed Circuit Board Assembly (PCBA) is a piece of electrical equipment that supports and connects the electrical and electronic components.
http://www.zens-elec.com/pcba/
What are MCCBs? Molded Case Circuit Breaker, MCCB, is an electrical protection device to protect electrical circuits from damage by overcurrent.
http://www.yhaite.com/mccb/
An office chair, or desk chair, is a type of chair that is designed for use at a desk in an office. It is usually a swivel chair, with a set of wheels for mobility and adjustable height.
http://www.ukachairs.com/office-chair/
Integrated Circuits IC has two main advantages over discrete circuits: cost and performance.
http://www.turpanic.com/integrated-circuits-ic/
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