GDQ-J10(b)A,GDQ-J16(b)A,GDQ-J25(b)A,GDQ-J40(b)A,电、气动高真空挡板阀(带波纹管密封) GDQ-J10(b)A,GDQ-J16(b)A,GDQ-J25(b)A,GDQ-J40(b)A 无锡市昌林自动化科技有限公司