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The clean boards used by food factories have an evolutionary process. From foam sandwich boards (not fireproof) to rock wool sandwich boards (not environmentally friendly), to today's glass magnesium sandwich boards, they are both environmentally friendly and fireproof, and have become the choice of food factories. With the maturity of the production process of magnesium oxysulfide sandwich boards, the goal of the precision electronic purification project is to establish a clean and dust-free working environment, which has strict requirements on the environment. It needs to strictly control the particles and other inorganic substances in the working space, effectively prevent the semi-finished products and finished products on the production line caused by the wall panel ceiling system. The color steel sandwich boards have the characteristics of simple and fast installation, no secondary decoration, and are office partitions Once the ideal material is installed, personnel can move in immediately. When removing, it is also simple and fast, fast in and fast out, and even can be used again. The clean boards used by food factories have an evolutionary process. From foam sandwich boards (not fireproof) to rock wool sandwich boards (not environmentally friendly), to today's glass magnesium sandwich boards, they are both environmentally friendly and fireproof, and have become the choice of food factories. With the maturity of the production process of magnesium oxysulfide sandwich boards, the goal of the precision electronic purification project is to establish a clean and dust-free working environment, which has strict requirements on the environment. It needs to strictly control the particles and other inorganic substances in the working space, effectively prevent the semi-finished products and finished products on the production line caused by the wall panel ceiling system. The color steel sandwich boards have the characteristics of simple and fast installation, no secondary decoration, and are office partitions Once the ideal materials are installed, the personnel can move in immediately. When dismantling, it is also simple and fast, fast in and fast out, and even can be used again