Construction equipment security risks exist, the operator improper use. Mechanical or accidental injury. Mechanical equipment sick operation caused the accident. Strengthen the maintenance and repair of equipment, equipment failure timely maintenance and oil spills. Operation of machinery and electrical equipment category lack protective equipment accident prone. Set up warning signs, additional protective equipment. Failing to test special equipment, key parts failure. Special equipment by the annual deadline, be examined by the unit qualified and rectification problems. Hand-held power tool breakage. Hand-held power tools should be equipped with leakage protection device
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