麻豆一区二区三区精品视频,人妻日韩视频一区二区,无码AV免费毛片一区二区,免费看国产精品3A黄的视频

Special-shaped refractory bricks for coal-water slurry gasifier

In the coal-water slurry gasifier, the installation of refractory bricks in the furnace is a key technology, especially around the nozzles with complex structur...

Features of trolley furnace

(1) The bottom of the trolley furnace is a movable trolley. Before the workpiece is heated, the trolley is loaded outside the furnace; when the workpiece is hea...