... diameter round tube for 1+4 Package : 2 cartons / set 5 layer export carton,KD packing Materials:steel frame , powder coated, mould ... starts from 1985, focusing on high quantity.. 2. 7 workshops, 5 product lines, 10000-30000 square meters, 3. 51-60 QC ... in Xiamen, an international port city, a special economic zone 5. ISO 9001:2000 / ISO 9001:2008 certifications, etc. 6. We ...