after I read and listened to what you wrote or what you explained this time,, it's quite impressive,, all the materials are all related to our daily life or environment,, thank you very much for providing very important information ,, and your explanation is quite clear and detailed enough,, as well as the way the explanation is in my opinion is very gentle and wise enough....... once again I thank you for the information.... good health always my friend.... ..
You are quite welcome and thank you for the kind words.