Isihlahla esikhulu sokuqasha leShandong Tongda siyaziwe ngokuthi kusebenzisa emva kokubhekiselela nokungena lokunyelelwa, njengamabhekezi amakhulu, amatanka amakhulu, noma imikhiqizo yemashini. Isihlahla singakhiwo ngokwesihlanu-umusha wokugcina (30–50 cm) efekwe ngokulandelayo kunye nomthonyama, ifanele yokuhlala okanye izinto ezinethile, ezifanele ukukhupha umsebenzisi ukuze alibheka ngaphandle komoya ngendawo yokusetyenziswa oluhlu. Ukudla lwepoliyurethane, lufanele ukuba lwegumbi elidifinyeleleyo (Shore A 60–90), lufundekelayo kwisehlobo esingafuthi ahlulekayo, ukusukela ukungena ngokuphelele kakhulu ngalokusebenza okuningi. Kufanele kuhlanganiswa nokuthola amagumbi akhulu aphoqweni, leshihlahla sihlabelela kakhulu ngokuthi khona kwiindawo ezinethile zokungena nokuthola. Phinda uhambele kuwo ukubona amandla amakhulu okanye iindlela ezidingezwe zokugcina ukusebenzisa lokhu lokunyelelwa.