The traditional process in the field of automobile manufacturing mainly involves stamping process, welding process, painting process, assembly process, commonly known as the "four processes" of automobile manufacturing, with the continuous advancement of science and technology, automotive intelligent manufacturing evolved into high precision and tighter tolerances, and the etching process stands out, but it is not the traditional process in the field of automobile manufacturing. But it is not a traditional process in the field of automobile production, but its unique level of craftsmanship plays a unique charm. The precision instruments, car horn grilles, gaskets, and injector screens housed inside cars are all forged through the etching process.

Microporous automotive filters is the most embodied etching process in the automotive field, such as engine filters, the pursuit of extreme micron-level tolerances, the smallest control of the aperture can be ± 0.01MM, the thickness of the extreme up to 0.03MM, for ordinary people between the absence of any conceptual, but mentioned through the etching process can do a hair thickness or aperture of the metal process, it can be associated with the high level of its process. Etched screen is mainly through the metal pre-treatment, the use of plate exposure, after the development, the etched area of the protective film removed, so that the metal contact chemical solution, the use of two positive graphics through the two sides of the chemical grinding to achieve the effect of dissolving corrosion, the formation of concave and convex or hollow molding effect, so that the engine in the screen change is complete. Compared with the traditional stamping process, which makes the material burr and rolled edges, high processing cost and easy to deform the material, stamping can make the material burr-free, no rolled edges, precise appearance and relatively low development cost.

Zollida etching process can meet in automotive parts to achieve precision tolerance of micron level, its products involve mechanical parts, gaskets and spacer gaskets, automotive horn mesh, high performance sealing gaskets, filter screens, oil injectors, airbag components, cylinder head gaskets, clutch components, metal atomization sheet and fuel cell sheet of new energy electric vehicles and other successful practices.