China in the end of 1997 by the National Bureau of nine ministries jointly issued "on the restriction of the provisions of mercury batteries," the notice, with effect from 1 January 2001, the ban on domestic production of various types of mercury is greater than 0.025% by weight of the battery battery; from 1 January 2001 onwards, where to enter the domestic market, sales of domestic and foreign battery products (including matching battery with electrical appliances), the unit need to be marked on the battery mercury content (for example 'low mercury' or 'mercury 'state) is not indicated mercury batteries are not allowed to enter the market; January 1, 2002, the ban on domestic distribution of mercury is greater than 0.025% by weight of the battery cell. The notice also states: Since January 1, 2005, the ban on domestic production of mercury batteries is greater than 0.0001% by weight of alkaline manganese batteries; since January 1, 2006, the ban on domestic distribution of mercury in batteries is greater than 0.0001% by weight alkaline manganese batteries.