The three types of rocks, perlite , rosin and obsidian, have the property of expanding under transient high temperature conditions. The ore types of perlite are shown in Table 1. The type, grade and division of perlite ore are shown in Table 2. The factors affecting the expansion properties of perlite are shown in Table 3. 1. High quality imported Compressor energy saving and low noise.Compressor brand Embraco and Danfoss is available for customers to choose. Showcase Refrigerator,Freezer Showcase,Display Refrigerator Showcase,Supermarket Showcase Refrigerators ShanDong XiMaiD Commercial electrical appliance Co. LTD , https://www.sdcakecabinet.com
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