Model FB312, FBL313/FB313Y, FB314, FB256(combing), FB315 and FB316/FB316Y Threaded-Rod Gill Boxes and FBL312, FBL313/FBL313Y, FBL314, FB256(combing), FBL315, FBL316/FBL316Y Chain Gill Boxes are a new gengration of high-speed and efficient series gill boxes designed,developed and manufactured by the DACHENG Textile Machinery Co.,Ltd on its own,on the basis of drawing on the features of the advanced domestic and overseas gill boxes and considering the actual situation of our country.