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SCN/5L-QINGDA series rotating internal cooling five-layer co-extrusion blown film

SCN/5L-QINGDA series rotating internal cooling five-layer co-extrusion blown film

SCN/5L-QINGDA series rotating internal cooling five-layer co-extrusion blown film

SCN/5L-QINGDA series rotating internal cooling five-layer co-extrusion blown film

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