A macem-macem pangolahan perawatan lumahing bisa digunakake kanggo ngowahi werna saka lawang geni baja. Contone, teknologi lapisan PVC utawa teknologi uyuh wêdakakêna elektrostatik bisa digunakake kanggo nutupi lumahing piring baja karo lapisan saka gandum kayu kanggo nuduhake anget lawang geni kayu.

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