$西格玛设计(SIGM)$ NT 10-K - Notification of inability to timely file Form 10-K 405, 10-K, 10-KSB 405, 10-KSB, 10-KT, or 10-KT405 Filed: 2018-04-20 AccNo: 0001437749-18-007372 Size: 41 KB 网页链接