What are three treasures, four mouths and five borders

“Three treasures” are three treasures of construction workers’ safety protection, namely: safety helmet, safety belt and safety net

“four openings” protection refers to the protection of reserved openings, elevator well heads, passageways and stairways in construction in progress

“five edge” protection refers to the floor edge, roof edge, balcony edge, elevator edge and foundation pit edge of the project under construction

copyright notice: This article is reproduced from the network media, only represents the author’s point of view, and has nothing to do with this website. 1f the information column articles and comments violate your legal rights, please call to let us know and we will deal with them in time

Back to list