Shingfong pvc trunking e maualuga lona uiga, o loʻo i ai le lautele o le pvc duct, sili atu i le 200 eseese le tele ma le mafiafia, e mafai ona matou ofoina atu lanu faʻapitoa o le pvc trunking. Ina ia faafaigofieina le faapipiiina o le ala pvc, e masani lava o le a tatou tuu faalua lapopoa faapipii lipine i tua o pvc trunking. O maketi eseese o loʻo i ai lona faʻatauga vevela faʻataʻitaʻiga o pvc trunking ma faʻapipiʻi. Mo se faʻataʻitaʻiga, o nisi maketi e fiafia i le pvc trunking i pusa faʻapipiʻi, faʻatasi ai ma le faʻapipiʻi lanu meamata fou, o nisi e fiafia i le pvc trunking i le faʻapipiʻi mumu-uliuli. E iai a matou mea fa'apipi'i maualuga e ofoina atu.
Shingfong pvc trunking e maualuga lona tulaga, o loʻo i ai le lautele o le pvc duct, sili atu i le 200 eseese le tele ma le mafiafia, e mafai ona matou ofoina atu lanu faʻapitoa o le pvc trunking. Ina ia faafaigofieina le faapipiiina o le ala pvc, e masani lava o le a tatou tuu faalua lapopoa faapipii lipine i tua o pvc trunking. O maketi eseese o loʻo i ai lona faʻatauga vevela faʻataʻitaʻiga o pvc trunking ma faʻapipiʻi. Mo se faʻataʻitaʻiga, o nisi maketi e fiafia i le pvc trunking i pusa faʻapipiʻi, faʻatasi ai ma le faʻapipiʻi lanu meamata fou, o nisi e fiafia i le pvc trunking i le faʻapipiʻi mumu-uliuli. E iai a matou mea fa'apipi'i maualuga e ofoina atu.