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Description
Hazardous gas detection is a tool specially developed to detect liquid petroleum gas and natural gas at the minimum concentration of gas in the air is 200 ppm and the maximum concentration of gas in the air is 10 000 ppm. Design and build a…
Classification
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Description
Innovation is very important in modern times to improving the quality of a product in industry of construction. A ladder is a piece of equipment consisting of repeated bars or steps (rungs) between two upright lengths of metal, wood, or rope that…
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