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国家劳动总局对全国气瓶制造厂产品质量进行了全面检查,并批准下列各厂制造高压无缝气瓶、低压焊接气瓶。
The National Labor Administration conducted a comprehensive inspection of the product quality of the national cylinder manufacturers and approved the following factories to manufacture high-pressure seamless gas cylinders and low-pressure welded cylinders.