I am working in a sport balls production factory.We have problem for our basketball black lines ink. They are easily removed with nail. What type of ink we should use ?

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put on hold as too broad by Buck Thorn, Mithoron, Mathew Mahindaratne, airhuff, Tyberius Oct 9 at 18:18

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    $\begingroup$ Product recommendations are offtopic in chem.SE. $\endgroup$ – Nilay Ghosh Oct 9 at 10:58
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    $\begingroup$ Is there a sports SE? $\endgroup$ – Oscar Lanzi 2 days ago

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