比利时Ｅｃｏｖｅｒ公司制造销往世界各地的洗涤和清洁产品．生产是在一家用能源含量低的材料建成的工厂中进行的，此外，当工厂拆除时这种材料还可以分离出来循环利用．废物被限制到最低限度．使用了若干种节能技术以及替代能源．该工厂能自我维持．封闭的水循环依靠太阳能运行，没有烟囱或废水排放管道． Ecover, Belgium, manufactures washing and cleaning products for sale all over the world. Production is carried out at a factory built of low-energy materials, and in addition, the material can be separated and recycled when the plant is dismantled. Waste is limited to a minimum. Several energy-saving technologies and alternative energy sources are used. The factory is self-sustaining. Closed water cycle relies on solar energy to operate without chimneys or wastewater discharge pipes.