Do you have to check just for the product that you're selling or for the inputs into that product? Do you have to check that the tablets, keyboards and mice us

Do you have to check just for the product that you're selling or for the inputs into that product? Do you have to check that the tablets, keyboards and mice used by your employees and those of outsourcing companies were not made in North Korea? Do you have to check that the ink used on the keyboards weren't made in North Korea? Do you have to check that the coal for the power station for the keyboard factory didn't come from North Korea?