@chenfeng.mechanica: The core function is to continuously plastic deform metal sheets through rolling or molding, forming specific joints.#round#square#pointy#forming#line#duct#ductwork#building#architecture#tiktok#accessories#worker#model#steel#stainless#galvanize#worklife#work#metal#manufacture#sheet#production#mechanical#machine#auto#process#factory#company#technology#hvac