For polymer materials, wire and cable, rubber, plastic and other insulating sheath tensile test at low temperatures, standard: GB / T 2951.4, VDE 0472Part616, IEC 60811-1-4 and other test standards, the device is suitable for wire and cable testing center, inspection station or wire and cable manufacturers and research institutions to develop polymer materials. The maximum stretch length: 280mm Tensile speed: 20 ~ 30mm / sub Chuck Type: Non-self-tight sample size: Ⅰ, Ⅱ No. dumbbell; displacement measurement: digital display, elongation accuracy: ± 1%, to distinguish Rate: 0.1% Temperature range: RT ~ -25 ℃ tension range: 0 ~ 50kg Rally accuracy: 0.01kg Unit conversion: kg / N / Lb cooling method: air cooling methods.