SX- 80 Digital coiling machine is an auto machine in making mattress springs. It combines coiling, knotting, heating and outputting total four procedures in one machine. The speed is at 80 units one minute. SX- 80 machine is our newest model. It catches up with the world advanced technology level by PLC controlling. It has the special characteristics compare to SX- 60 machine that is the self- protecting system which is the best way to protect the machine itself.