Special high-precision runner extrusion die structure, 45 # steel precision vacuum forming mold, stable degree of vacuum calibration table, uniform and high traction NBR crawler hauling helping high-precision manufacturing PVC profiles

Special high-precision runner extrusion die structure, 45 # steel precision vacuum forming mold, stable degree of vacuum calibration table, uniform and high traction NBR crawler hauling helping high-precision manufacturing PVC profiles

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