Description: 264 plastic and nonmetallic article shaping or treating: processes / 264 plastic and nonmetallic article shaping or treating: processes/(405) direct application of electrical or wave energy to work (e.g., electromagnetic wave, particulate, magnetic, induction heat, sonic, electrostatic energy, etc.) (435) molecular aligning or molecular orientating (e.g., poling, etc.) (436) producing permanently polarized dielectric (e.g., electret, etc.)
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