... rope hoists gantry cranes for lifting 3. The product’s working environment temperature is between -20 °C to +40 °C, and ... the mentioned conditions and requirements above. 8. The product’s working level should be according B/T9008.1-2004 "wire rope ... parameters and technical conditions" in the regulations. Main structure and working principle of CD1, MD1, wire rope electric hoist CD1, MD1 rope ...