塔吊倒塌引发的重大事故近来时有发生，塔吊事故频发的重要原因之一是假冒伪劣塔吊大量充斥于建筑市场，而推销假冒伪劣塔吊的则是那些挂羊头卖狗肉的经纪人。业内人士惊呼，劣质塔吊是一颗不定时炸弹，一出事就是大事。后起“游击队”，超过“正规军”山东是塔吊生产大省，占 Recently, major accidents caused by the collapse of cranes have occurred frequently. One of the most important causes of frequent crane cranes is that a large number of counterfeit and shoddy cranes are flooding the construction market while those selling counterfeit and shoddy cranes are those who hang their heads and sell dog meat. Insiders exclaimed, inferior tower crane is a time bomb, an accident is a major event. After the “guerrillas”, more than “regular army” Shandong is a large crane production, accounting for