Isikhelo semfene we-polyurethane yeshandisa kwe-Shandong Tonda siyiphiwa ukusukela isapho esisafune kwiindawo ezidingekayo, njenge-chemical plants, amarefi yebhophi nazo zama-coal mines apho amadustingi okuchaza noma izigasini zakufuneka. Amasikhelo apheleleyo akuyingxenye yokuphuma polyurethane engakwazi ukubhuba nokuhlola i-static, ukuze usuke wendlela zokuthuthukiswa (e.g., ATEX, IECEx). Umehluko wokuqasha kukhishwa ngemvelo engacabangako nokushintsha ukusuka kwezinto ezinamandla, ngenxa yalokho umfanekiso wesikhelo uhamba ngokulungile kwiindawo ezifanele. Isikhumbuzo sokugcina amanye amagama, uphinde ungene ukusebenza ngokulungile, ubuyekezo oluhlu lokuncedisiwe nokuhlola izigaba eziphumayo, futhi amapharama angazibuyiselwa. Ukubaleka nomuntu ukuba bheke amandla nokuhlola, phinda usetyenziswa siphumelele nokuthi singayiphiwa ngokulungile, futhi ungene ukubonisa izindlela zokushintsha zokuphuma zokusukela kumthetho wakho.