GOSL -  our company specializes in the upgrading of heavy steel structure factories for more than 20 years without demolishing the walls, and does not need to demolish the roof production and construction at the same time. we also have rich practical experience. the height of the first floor can be increased from 6 meters to 19 meters. there are improved finished products on site in all regions across the country, which can be visited and inspected by customers at any time.导航,shanghai shengli steel structure co., ltd. is a well-known group economic entity in shanghai that integrates steel structure design, steel structure production, steel structure processing, steel structure construction, steel structure production and installation, and operation.爱好
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