660GH-50ULTC 660GH-40ULTC 660GH-32ULTC 660GH-200ULTC 660GH-160ULTC 660GH-125UL 660GH-63ULTC 660GH-50ULTC 660GH-40ULTC 660GH-32ULT 北京北极新华科技有限公司