U-Shandong Tonda uhlola umesh wokuqinisekisa oluhlukwe kwe-PU okulandelana nokugcina izindlela zokushayela ngaphakathi komphendulo wesayithi, ukuthatha uphawu lokusebenzela amagama asesiqembu esidingayo. Izinyawo zomesh eziluhlukwane zingena vibhethelo ezifanekiso (20–50 Hz) ezikhathalisele ukubheka ngeemfene yakho yokuthula, uzokuphumelela isiphumo sasendlaleko, ngisho amanye amagama asemandla. Umehani wokuqinisekisa uwusunguliwe ngamahlobo amabhizinisi weephiyesi okanye iimekanikali, uvumeleyo olufanelekile olunikeziswa ukususa amagama angaphambili. Luhlelo oluhlinzekelayo luhamba ukususwa imoya yasebenzi ngokwesihlanu ngokwesentala phakathi kwesayithi sokushayela ngaphandle kokushayelwa ngaphandle, ngokuyenza uphawu lokusebenza. Kufanele usindze nethemba zakho ukubonisa izilungiselelo zomesh wokuqinisekisa ukusetshenziswa kwisebenzi lakho lesayithi.