Air-conditioning installations Tenders , Vehicle air conditioners Tenders , Machinery for the treatment of sewage,Effuent,Water,Slugde Etc Tenders , Sedimentation beds Tenders , Sewerage works equipment Tenders , Works for complete or part construction and civil engineering work Tenders , Flatwork for zoo Tenders , Construction works for sewage treatment plants, purification plants and refuse incineration plants Tenders , construction work for sewage-treatment plant Tenders , Electrical installation work Tenders , Other Electrical installation work Tenders , Plumbing and sanitary works Tenders , Heating, ventilation and air-conditioning installation work Tenders , Installation of plumbing and heating equipment Tenders , Operation of electrical installations Tenders