Umhlanga wokuvavanya okubhedekileyo weShandong Tonda ukuhlawulwa ukwenzela ukusetyenziswa ngokukhangelwe kakhulu emva kwezindawo ezinethemba zokuthi izinto zihlabeleke, njengesiPhaltophu esizibuyelekelayo, amafoundri, noma iindawo zeziNtshonalanga. Umhlanga ungeniswe yepolyurethane ephakamisiwe ngokuthi akufanele ukusuka ngokuthabatha imibuzo yokugcina ngqo phakathi kwesikhathu sokushintsha usuku 150°C (302°F) ngaphandle kokubhalekelayo nokungacabangeleka. Ukuphucuka kweflip-flop ukumema umoya okanye nokuvavanya ngokuphambili ngokubhedekileyo ngaphandle kokuthi amandla azicabangene, ukusuka ukuthi amandla angazithinta futhi ukusigcina ukusebenza ngokuphambili. Bonisa nethu ukuba uzame ukulinganisa iingxelo zokushintsha ngokuthabatha zokuthi zimiseleyo lokusebenza ngokubhedekileyo.