Ukuhlukeleka kwe-Shandong Tonda ngokushesha kuhlula amaxwebhu okukhulu ephakeme iphethelo lepolyurethane enhlangene nezilayezo zokusetyenziswa ukususa imibuzo nemikhomboni. Umlayezo wasesikhashana (Shore D 85) uhlelwa ukuthi uhlale lokusebenza nge-20 kN/m, xaqondisa ukuthi umlayezo wasesiphathiso (Shore A 70) uzisebenzise ukubhekisisa izinhlobo ezinamandla ezifumanekayo. Ukungena nomabhabho we-aramid, uhlelwa ukungena nokungena kokuphumelela ≥50 MPa kunye nokubhekisisa kokumangaliso (Izod impact ≥25 kJ/m²), ukwenzela ukuba kufanele kwiseva esidingayo lokusebenzisa amaxwebhu akukhululekile. Bonisa nethemba lokusebenzisa ikuhlukeleka yokuphumelela yokuqala lokusebenzisa imibuzo yakho.