I’ve been investing only since November, 2015. You have probably been at it longer than I’ve. So, take this feedback with a pinch of salt. 
It’s a well diversified portfolio, & your rationale seems to show that you have done your due diligence before investing in these companies. Hopefully, you acquired them at decent valuations.
I would point out a couple of things.
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The Institutional holding is not necessarily a good thing, especially the FIIs (I refer to them as FITs - Foreign Institutional Traders) who tend to sell for macro reasons nothing to do with India, or the underlying business fundamentals.
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Also, your portfolio seems skewed towards Housing/Home Improvement sector (Century Ply, Cera, DHFL, Finolex, HSIL, Sintex). You might look at discretionary spending/demographic/entertainment/media plays like Wonderla, PVR/Inox, Shemaroo/Balaji, etc. (You will have to wait for a correction in Wonderla, PVR, Shemaroo.)
I hold Granules (you definitely got it at a great price which allows you to wait patiently for the triggers to play out), and Sintex. They need to be monitored closely not only in terms of operational performance, but also the corporate governance.
I track Pokarna - successful capex execution of the Quartz division, and the hiving off the apparel business are the key things to monitor. In case you missed it, @varadharajanr’s write up on Pokarna covers all the moving parts of the business.
If you are looking for defence plays as @bbbhutra suggested, you could also look at AstraMicro, & Shiva Texyarn.
Regarding Chemicals, you may read these Phillip Capital Reports on the sector to take a call.
http://www.phillipcapital.in/Admin/Research/702452410PC_-Specialty_Chemicals_Sector_Initiation-Mar_2016_20160329212843.pdf
https://www.phillipcapital.in/Admin/Research/48447685PC-_Specialty_chemicals_Conf_Key_Takeways-_Sept_2016_20161003195148.pdf
Happy Investing!
Rajeev.