A lightweight partition wall made of plaster or hollow gypsum board, used to separate the interior space. It is simple in structure and easy to process and install. At the end of the nineteenth century, countries began to use gypsum board as internal partition wall. It was a kind of light building material with larger output and wider application in the world. This wall is usually used as a skeleton of steel wooden keel, and can be used according to the requirements, with other materials (such as mineral wool board, waterproof coating and surface decoration material etc) composed of sound insulation, waterproof wall or senior decoration requirements. In 1970s, China began to test and manufacture gypsum plasterboard and hollow gypsum lath from Gypsum Board Machine Manufacturer, and applied it in construction engineering.
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