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                    2018/02/22 induction melting metal sand after air cooled preheating  induction melting metal sand after air cooled preheating (1)induction melting metal sand after air cooled preheating (2)induction melting metal sand after air cooled preheating (3)induction melting metal sand after air cooled preheating (4)induction meltin… induction melting metal sand after air cooled preheating (1)induction melting metal sand after air cooled preheating (2)induction melting metal sand after air cooled preheating (3)induction melting metal sand after air cooled preheating (4)induction meltin…
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                    2018/02/22 induction melting metal sand after air cooled preheating  induction melting metal sand after air cooled preheating induction melting metal sand after air cooled preheating
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                    2017/08/06 half open (clamp) induction coil for preheating  half open (clamp) induction coil for preheating half open (clamp) induction coil for preheating
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                    2017/08/06 half open (clamp) induction coil for preheating or post-welding  half open (clamp) induction coil for preheating or post-welding half open (clamp) induction coil for preheating or post-welding
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                    2017/08/06 flexible induction coil for preheating  flexible induction coil for preheating flexible induction coil for preheating
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                    2017/08/06 flexible induction coil for preheating or post-welding  flexible induction coil for preheating or post-welding flexible induction coil for preheating or post-welding
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                    2017/08/06 flexible induction coil for preheating or postwelding  flexible induction coil for preheating or postwelding flexible induction coil for preheating or postwelding
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                    2017/08/06 clamp coil for preheating oil pipeline  clamp coil for preheating oil pipeline clamp coil for preheating oil pipeline
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                    2017/08/06 induction preheating hydroturbine shaft by full air cooled dsp induction heating machine  induction preheating hydroturbine shaft by full air cooled DSP induction heating machine induction preheating hydroturbine shaft by full air cooled DSP induction heating machine
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                    2017/08/06 induction preheating hydroturbine shaft by full air cooled dsp induction heater (2)  induction preheating hydroturbine shaft by full air cooled DSP induction heater (2) induction preheating hydroturbine shaft by full air cooled DSP induction heater (2)

