Pane vaviri zvakafanana pamusoro ndiro, The kwakakurudzira Sheet Top Plate uye The Plastic Sheet Top Plate.
The kwakakurudzira jira Top ndiro riri jekiseni kuumbwa pamwe kwakakurudzira jira, riri ventilated, chinovhenekera, kupisa-achinyangarika, asiri pitikoti, Anti-kungatikanganisa uye yakasimba.
Mapurasitiki mukuru-nokukurumidza ndiro riri jekiseni-kuumbwa pamwe kwenyika ouinjiniya mapurasitiki. The tireyi rusvingo thickened uye akamutswa kudzivirira tireyi kubva tilting uye tilting ari humburumbira. Zvinonyatsorehwa ndiro riri husingakwanisi kwechirwere, kukwegura uye deformation, uye anogona zvinobudirira kukunda kurema uchigara.