I hangaia e Nanjing Wasin Fujikura etahi atu muka kia rite ki te hiahia o te maakete, hei tauira, he rereke te ahua o te muka whatu (200um, 400um, 600um etc); raro mate muka whatu; muka whatu tuakiri; kaha teitei muka whatu etc 200um muka whatu ake kore wai tihi me te iti ahu, tenei muka ripeka wāhanga whakaiti 40% atu te muka whatu noa, kia whakaiti dimemsion taura whatu, tango rawa o ngā rauemi Pipeline, utu whakaora.