In some large venues, such as supermarkets, hospitals, and parking lots, everyone can see public toilets. However, when people participate in some large-scale activities, they will always be troubled by th.......

• Model NO.: 12C-20
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• Model NO.: E43H D97
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• Model NO.: 42450-02140
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The building intercom system is a device used in high-rise residential buildings, inside and outside apartment buildings, household information transmission, anti-theft door control, and households alarming to the building duty room in an emergency. The system is mainly composed of host, exte.......

The analysis of the warm extrusion forming process shows the automotive differential planetary gear forgings, and the material is 20CrMnTi cold drawn round steel. The planetary gear warm extrusion process is: blanking (a) → annealing → phosphating - saponification → pr.......