O nei oloa fa'alauiloa o Shantui fa'atauga autu fa'ata'ita'iga: SG16-C5, SG18-C5 ma SG21-C5 grader.
C5 grader e faʻavae i luga o manaʻoga maketi, mafaufau i le faʻaogaina o vaega, o foliga vaaia ma le faʻatinoga o le masini atoa ua faʻaleleia.I le taimi lava e tasi, o le faʻaogaina o le poto masani ua matua faʻaleleia