Harvakids dobavljač folije za prozore fokusira se na različite vrste proizvodnje folija za prozore po narudžbi od 2005. godine.
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VLT=light transmittance, UVR=ultraviolet rejection rate, IRR=infrared rejection rate. To put it simply, the primary focus should be on maximizing the values of the two dash lines, which are UVR and IRR, while Visible Light Transmittance can be adjusted according to individual preferences.