28 of environmental protection in guangdong shenzhen launched \"Chinese public fill day action - hydrogen CFCS out community campaign\". In the future, this activity will be in Beijing and other large and medium-sized cities continue to promotion. Hydrogen CFCS and freon, halon belong to ozone-depleting substances, have damage to the ozone layer. In industrial production, it is mainly used in refrigerants and foaming agent, especially household air conditioning refrigeration equipment is the main use of the material products. At present our country is the world\'s largest producer and consumer of hydrogen CFCS, hydrogen yield of CFCS in 2009 in China more than 70% of the world\'s supply. Environmental protection department of environmental protection said XiaoXueZhi, deputy director of the international cooperation center in our country since 1991 to join the Montreal protocol on ozone depleting substances, in the process of more than 20 years of performance, has eliminated more than 100000 tons of ozone-depleting substances, about half of developing countries out of the total. At present, the performance of the protocol\'s main task is to \"speed up eliminating hydrogen CFCS. , household air-conditioning industry in China will be using R290 as the main alternative refrigerants, and will be completed before 2015 18 R290 air-conditioner production line modification, gradually reducing hydrogen use of CFCS. R290 commonly known as propane, is a pure natural green environmental protection refrigerants, no ozone depletion, the greenhouse effect values close to zero. May 1, the new national standard \"household and similar electrical appliances safety special requirement of heat pump, air conditioner and dehumidifier will be officially implemented. XiaoXueZhi says, this means that the air conditioning refrigerant replacement, eliminating hydrogen CFCS, formally in our country in line with international standards. \"To protect the ozone layer, care for our earth homeland, not only the government, the enterprise can make efforts, each can contribute to the public.\" Jia Feng, director of the ministry of environmental protection publicity and education center, points out that \"choose to adopt environmental protection refrigerant air conditioning product, the reasonable processing of waste refrigerators and air conditioners and other small moves, can reduce the damage to the ozone layer.\" (source: xinhua news agency)