... and other bulk materials easily lead to foot injury workshop, set "Look out feet."2, the need ... the graphic signs.l prone to splash in the workshop, such as welding, cutting, machining and other workshops ... l more than 85dB in the noise of the workshop, set "must wear ear protection devices."l ... gloves."l drop in easily lead foot (stab) injury workshop, set the "must wear protective shoes." 3, with ...