There isn't any general public info on a particular "hdb comments type 1k 28" as this is not a standard HDB identifier. However, HDB presents various channels for opinions. The key technique is through the "Generate to Us" e-opinions type around the HDB website. This way lets you submit questions https://hdbfeedbackform1k2886419.uzblog.net/hdb-feedback-form-1k-28-50778981