Adirẹsi Ilé 7-16, No.188, South 4th Ring West Road, Beijing, China Ifiranṣẹ yangshan@const-mach.com chenyoufeng@const-mach.com liuyapeng@const-mach.com Foonu Ọgbẹni Yang ： 15010377396. Ọgbẹni Chen ： 13801306377. Ọgbẹni Liu ： 15233730575. Awọn wakati ṣiṣiṣẹ Ọjọ Aarọ-Ọjọ Jimọ: 9 owurọ si 6 irọlẹ Satidee, Ọjọ Sundee: Pipade
