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PTBN350 370 375 400 420 430 440 450 490 O500-UP5M-100同步带
PTBN350 370 375 400 420 425 430 440 450 475 490-UP5M-100 150
PTBN310P5M 320P5M 325P5M 340P5M 350P5M 370P5M 400P5M-100 150
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PTBN300P5M 310P5M 320P5M 325P5M 340P5M 350P5M-100 150
PTBN-300P5M 320P5M 325P5M 340P5M 350P5M 370P5M-100 150
