Nyob rau hauv ancient sij hawm, ntoo latches nrog tenon thiab mortise lug siv rau lub qhov rooj thiab qhov rais, ua tiav kaw los ntawm deformation ntawm ntoo.
Niaj hnub no, 304 stainless hlau yog dav siv vim nws corrosion kuj thiab tsis kam mus deformation
Qee cov khoom lag luam yog tsim los ntawm zinc alloy tuag-casting technology, thiab lawv qhov chaw raug electroplating los tiv thaiv xeb
