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2016-07-15
CO2 foaming technology compared with the traditional advantages of Freon foam
CO2 foam technology will CO2 as foaming agent, directly to avoid the adverse environmental impacts brought by the freon as foaming agent, the energy conse......
2016-07-15
Han plastic equipment products produced a maximum width and thickness, respectively
Han plastic equipment production of extruded board maximum width can reach 1200 mm, thickness is 150 mm. ......
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天天干天天日,天天爽夜夜爽夜夜爽精品视频,公天天吃我奶躁我的比视频,夜夜欢天天干,天天天天躁天天爱天天碰2018
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