This is George Coucourakis from Marloth Aero cc in South Africa. We seek a pure sine wave 1000w, 220 V, 50 Hz inverter / UPS with 12 V charger for our needs.We desire to purchase a sample ( 1 pce ) for evaluation. Please send an invoice showing price, EFT details, courier delivery cost to South Africa and delivery time.Please send also:1. Operating manual,2. Price list for your range of sine wave inverter with charger / UPS series