I've discussed with Hj Naza whom to appoint to do the renovation work. Initially, there was one guy (can't remember his name) who gave quotation to us but the price was expensive - I think about ~ 10-12k. In the end, we appointed Zainol, a regular carpenter who has done many renovation works. Basically the renovation involves;
-building new extension for dedicated lab (10'x12')
-fixing the roof (new transparent roof and asbestos) -building new extension for dedicated lab (10'x12')
-new ceiling (10'x28')
-new doors (2)
-wall painting (internal)
-additional flask shelves (1 row)
-new window panel (1 unit)