日日狠狠久久偷偷色综合0_亚洲日本一线产区和二线_久久久久久精品免费无码无_伊人色综合九久久天天蜜桃

Made vertical vacuum annealing furnace, mainly used for high-speed steel M2, M42, M51 and other wire annealing. The device uses an automatic lifting loading mode, the heating process control technology, strong circulation cooling system, computer control and acquisition, processing and recording data and other advanced technologies. High speed just after annealing bright, internal uniformity, no oxidation, decarbonization.