Nye asambodo ngwaahịa
Nchekwa nke scaffonting bụ ihe kacha mkpa maka scanflings. A na - eme ka ngwaahịa anyị niile gosipụta site na usoro dị mma. Maka ngwaahịa iwu ọ bụla, anyị nwere ike inye ule nke atọ maka ndị ahịa. Asambodo anyị agafeela gụnyere O., SGS, Tuv, ISO3.
