... ,including the roller blinds ,vertical blinds, roman blind ,pleated blinds ,double glazed units blinds.... and we export many countries, such as Japan ... for bussiness meeting. Production description: Tech data1. K-value of window(K<= 2.0 w/m2 . h)2. Sunshine-proof rate ... room, Bring you peaceful and comfortable living conditionOUR PRODUCTS & PLANT: Double glazed venetian blinds