Years ago, I was working in the press. On the cover of the machines there were inks and chemicals which had sticked on it for lots of years, it seem impossible to remove. I am able to finally removed it. After moving the stains on the cover it look almost as new and shining.
These incident had attracted the attention of a Japanese teacher, I don't know how he got to know about it and he was so impressed, he brought his whole class of students to study it and compared the machines which had the stains removed and the one which had not removed.
Imagine the surprise the stains that had been there for a lots of years suddenly were removed. You can see the amazement on their faces, when they compared the one which had the stains removed and the one that were not removed.
After months of finding ways to clear the stains, through continue experimenting and finding the right chemicals to clear irremovable stains, I finally found a concoction of chemicals, that able to remove most of the stains. The chemicals were able to make the cover look shining.
I used the hand washing agents combine with kerosene and some other chemicals. (Hand washing agents is not normally used to clean the machinery)
As after the stains were removed, everybody were stunned because the stains on the cover of the printing machines were there lots of years and were thought to be impossible to remove .
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