招标公告链接如下:
https://www.gzggzy.cn/cms/wz/view/index/layout3/index.jsp?siteId=1&channelId=525&infoId=2039294
https://www.gzggzy.cn/cms/wz/view/index/layout3/index.jsp?siteId=1&channelId=525&infoId=2039292
https://www.gzggzy.cn/cms/wz/view/index/layout3/index.jsp?siteId=1&channelId=525&infoId=2039295