วัตถุดิบทดแทน (Alternative raw material)
N/A
กระดาษชำระ
[1] http://www.108junk.com/index.php?mo=10&art=254797
[2] Recycling of Various Waste Paper Containing Foreign Matter. 2011. Available from: http://nett21.gec.jp/Ecotowns/data/et_a-06.html