Polycarbonate greenhouse 1. 4mm UV pc sheet, 1.2mm alu alloy, 6mm base 2. ISO9001, ROSH, SGS 3. Competitive price 4. DIY Polycarbonate greenhouseGensin greenhouse is produced by 4mm polycarbonate hollow sheets and aluminum alloy frames. It has the characteristics of high light transmission, good effect of heat insulation, energy save, simple and convenient structure high impact strength, simply ...