06 August 2019 2 10K Report

Dear All,

Currently, we are facing quality issue of our recovered carbon black(rCB) that our customer complained our rCB got unpleasant smell. I suspected those are due to volatile matter present in the rCB. May I know what is the quick way to do an estimation on what is the level of 'odor' or in precise, how much volatile matter content present inside?

Can I use transmittance of toluene extract to do the estimation?as the higher the percentage of transmittance, the lower the amount of organic residue...

Or the only way is to do GC-MS?

Hope all of you could assist me on this issue.

Thank you.

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