PC400 Long Reach Boom, PC400 Long Arm, PC400 Long Boom manufacturer / supplier in China, offering 22meters Komatsu PC350/PC400/PC450 Excavator Long Reach Boom for Sale, Komatsu PC450/PC460 26meters High Reach Demolition Boom, 20ton Excavator Sieve/Skeleton Bucket with 1800mm Width and so on.