I-TPV imodeli yokuvikelwa kwemvelo yokusetshenziswa kwemoto unyawo idlule endaweni enegunya elikhulu kunayo yonke isitifiketi se-EU SGS ROHS10, isitifiketi se-formaldehyde. Ngakho-ke lapho beshayela imoto endaweni encane yokushayela, umthengi angajabulela okungenabuthi okunephunga, ikhwalithi ephezulu, indawo entofontofo.