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305* 120 t/100t/80t*2.5/3.0 *25.4/30
355 *120 t/100t/80t* 2.5/3.0* 25.4/30
405*120 t/100t*3.2/3.5*25.4/30
450*120 t/100t*3.8/4.0*25.4/30
505*120 t/100t*4.2*25.4/30
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