Gromo Posted in Belgium. Location: 51.0535,4.8731 Place and Country: Herselt, Belgium Companyname Gromo City, Country Herselt, Belgium Greenhouse area 1,1 ha. Cultivation tomatoes Trellis 8 meter Aluminium gutterlength 92 meter Gable postheight 5 meter Baylength 5 meter Roofpitch and glass 23 degrees, 2140 x 1250 mm