Isikhomisa sokunceda kweShandong Tongda, esihlelwa ukwenzela ukuba zitholiwe amaxhobo omncane olungaphansi lokusebenza ngokupheleleyo, njengamalayini okusetyenziswa, uprosesing wamakhemikali noma i-saltwater applications. Ukumathiseko kwesikhomisa kunethenge neentsha yayo ezibonakale yi-fluorine polyurethane, eyayiphiqisela ngempumelelo khona kwiimfuyo, i-alkalis noma iisolvents (pH 2–13). Umoya wombuzo wokuqaphepha kuhlatyisela uhlobo lwesikhombiso sokunye nobungako lwabo, ukuze lizenze umthondozeli weentsha yayo kwiindawo ezincongweni nokukhuluma, phakathi ngeentsha yayo engenani yokutsibatsa amakhemikali nokutsibatsa. Kuyindlela lokuhlola izindlela eziqhathanjisiweyo ezidinga umkhondo omkhulu wesikhombiso, le sikhomisa sikuhlola ukubonisa ngempumelelo kwiindawo ezincongweni. Ukubaleka nomhlaba ukuthi uzixhasi izinhlobo zokufundiswa nokutsibatsa amakhemikali noma ukuba aphoqele amacala ebalulekileyo.