Granular Activated Carbon,Wastewater Treatment,Water Filtration Coal-Based Activated Carbon,Activated Carbon Co., Ltd. , http://www.nbactivatedcarbon.com As the machine tool was born, the fixture was closely attached to the machine tool, and it continued to evolve and develop with other process equipment. Today's composite fixture industry has become a fixture that not only refers to the concept of "building block principle", but also gives deeper guidance under the guidance of modern machinery manufacturing concept.