Most schools now use white boards and erasable markers. The markers are refilled with ink. Therefore, schools don't buy new markers but they refill their old ones.

Learn how to produce the ink. The only thing you need to know are the secrets which are:
a. The required chemicals which are available at any chemical market.

b. Formula: the proportion of each chemical

c. The stages of mixing and formation

d. Packaging and marketing of your product.

I will guide you in the practical anywhere you are.


The ink production is a sustainable business in as much we have schools and they still teach subjects like Mathematics, Physics, Chemistry, Further Maths and all other subjects that involve workings and writing on the board.
Note: most schools, especially in cities, have switched from chalk to marker. You see that it's a huge business.

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following

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Moneyfem:
I can teach

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Moneyfem:
Only whatsapp no or email, pls.

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Moneyfem:
I can teach

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@everyone, do u want only the manual or plus the continual online practical guide?

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