I'm at Siltronic Silicon Wafer in Singapore https://t.co/9nRAYgLsND
<a href="http://foursquare.com" rel="nofollow">Foursquare</a>
East Region
[{'url': 'https://t.co/9nRAYgLsND', 'expanded_url': 'https://www.swarmapp.com/c/1Q7QvMm0KTk', 'display_url': 'swarmapp.com/c/1Q7QvMm0KTk', 'indices': [44, 67]}]
PAYA LEBAR NORTH
["i'm", 'siltronic', 'silicon', 'wafer', 'singapore', 'https://t.co/9nrayglsnd']
[]
silicon wafer
siltronic silicon wafer singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance reports."},
    ]

It seems that the Twitter post you provided does not relate to a maintenance report feedback to public flat house in Singapore. The term "siltronic silicon wafer" is likely related to a different industry or topic altogether.