本公司生产的背景架使用的材料为直径为48 mm，壁厚为3 mm的优质铝合金。
The material of this truss is steel with Aluminum alloy finished, its diameter is 48mm, and the thickness is 3mm.
现公司的主要产品有：各种规格的铝合金灯架、背景架、网架、活动舞台、机箱等，具体规格可根据客户不同的需求订做和设计。
The company's main products are: all kinds of aluminum truss, background stands, truss, movable stage, chassis, etc., specifications can be customized according to customer requirements and design.
这支电视广告的镜头先从水下聚焦四散奔逃的绿螃蟹，紧接着是一架商务飞机扶摇直上，离背景中的上海渐行渐远。
The video AD zooms in on a gaggle of green crabs scurrying around under the water, and then a corporate jet taking off with Shanghai in the background.
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