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This model is a Sprinkler Head to fix the inner part of duct to put out fire that can be occurred during the flow of volatile gas, hydrochloric acid or nitric acid gas in a semiconductor factory through duct. The product prevents corrosion of Sprinkler Head due to high hydrochloric acid/nitric acid gas and inflow of gas in the duct. The Model has a 8-layer special gas intercept apparatus to prevent inflow of gas in the duct. This product is approved by F.M. |