The products of complete combustion enter the <a href=http://www.hzqx.net/en/cpzs.asp>tempering furnace</a> through channels in the ... The width of the tempering furnace is 1.66 m, the length 7.5 m, ... heating the glass panels in the tempering furnace using bottom- and top-heating ... a tempering station in communication with the tempering furnace; ...