Workers must undergo proper training and certification to reduce threats and stick to crane safety please note. http://[email protected]/info.php?a%5B%5D=%3Ca+href%3Dhttps%3A%2F%2FB.cari.com.my%2Fhome.php%3Fmod%3Dspace%26uid%3D2959772%26do%3Dprofile%3Eladders+and+scaffolding%3C%copyright%3E%3Cmeta+http-equiv%3Drefresh+content%3D0%3Burl%3Dhttps%3A%2F%2Fatavi.com%2F+%2F%3E