Metal frame into the ceiling and wall keel keel two categories. Keel ceiling by carrying keel (main keel), the cladding keel (auxiliary keel) and the various component parts. Divided into D38 (UC38), D50 (UC50) and D60 (UC60) 3 Series. D38 hanging point for 900-1200 mm spacing is not chock ceiling, D50 hanging point for 900-1200 mm spacing chock ceiling, D60 hanging point for 1500 mm spacing chock ceiling increase, U50, U60 for cladding keel, it is used in conjunction with a carrying keel. Wall keel from Wang keel, and vertical keel shoring keel and the various components and a pitch (C50), Q75 (LG), Q100 (C100) and Q150 (HS) 4 Series.