HEVTA uPVC window and door for your better life、 security、 and health、 we have intentionally selected the best material for the fabrication of uPVC (Vinyl) window and door for residential houses in Thailand. HEVTA uPVC (Vinyl) window and door profiles、 Germany system、 have many outstanding qualifications such as fire insulation、 non-heat conduction、 external noise reduction 、 no disturbance from termites and ants、 high durability、 steel reinforcement for security、 easy maintenance.