Infrared-transmitting Acrylic;Optical-Grade IR PMMA;IR-transparent PMMA;Infrared-transmitting plastic;Infrared-transmitting PMMA;Infrared-transmitting polymethyl methacrylate;Infrared Transparent Polycarbonate;Infrared Transparent PC;Infrared Transparent Plastic; near-infrared camouflage and stealth PA66 plastic；Far-Infrared Transmissive Plastic；Near-infrared transparent PC plastic；Near-infrared penetrates PMMA plastic；camouflage and stealth PA6 plastic；camouflage and stealth POM plastic; The plastic in the 7~14μm far-infrared range;7-14 micron transmitting plastic material;8-14 micron transmitting plastic material;8-12 micron transmitting plastic material;7-12 micron transmitting plastic material;5-14 micron transmitting plastic material;plastic material transparent in the 7-14 micron wavelength range;plastic material transparent in the 7-12 micron wavelength range;plastic material transparent in the 8-14 micron wavelength range;plastic material transparent in the 5-14 micron wavelength range;plastic material transparent in the 5-12 micron wavelength range;