Scrapers can be used to remove residual materials from the working surface; the dataset includes primary raw and auxiliary materials, energy, waste, and excludes infrastructure such as production equipment and factory construction within the dataset boundary; the life cycle inventory is compiled from data sourced from multiple references; the manufacturing process of scrapers includes angle steel fixture machining, pre-compressed spring assembly machining, aluminum alloy component machining, blade - baking material mixing, blade - secondary vulcanization, blade - trimming, assembly, nameplate marking, packaging, and other processes.