上海典昭阀业有限公司（典昭SIGEVAL）生产有：SIGEVAL球阀，SIGEVAL取样阀，SIGEVAL蝶阀，SIGEVAL疏水阀，SIGEVAL电磁阀，SIGEVAL截止阀，SIGEVAL止回阀，SIGEVAL执行器，SIGEVAL调节阀，SIGEVAL过滤器，SIGEVAL排气阀、SIGEVAL角座阀，SIGEVAL衬氟阀门、SIGEVAL蒸汽阀门，SIGEVAL汽水分离器、SIGEVAL美...