During the die-casting process of aluminum alloy die-casting machine, only one speed of the pressure-feed metal liquid enters its mold, and its injection speed is only 1m ~ 2m / s during operation. With this process, there are many internal pores in the casting, and the structure is loose. It was soon improved to a two-stage injection. The injection process was simply decomposed into two , XXX, k, ᱟᱨ 30 kg ko ko ko kạmi lạgit̕ kạmi lạgit̕ kạmi lạgit̕ kạmi lạgit̕ kạmi lạgit̕ kạmi lạgit̕ kạmi lạgit̕ kạmi lạgit̕ kạmi lạgit̕ kạmi lạgit̕, https://shirt ko, haption, ᱟᱨ https://s, ᱟᱨ https://s, ᱟᱨ http:
