Sant Nasyonal tès materyèl asye
Sant Teknoloji nan Benxi Iron & Steel Group co, Ltd
Yantai Branch, 52 Enstiti Lachin endistri gwoup
Wuhan Iron and Steel Group Teknoloji Sant Enspeksyon
Baoshan Iron & Steel co, Ltd Espesyal Steel Branch
Lekòl Chimi ak Jeni Chimik, Shandong University
Shandong Metallurgical Research Institute Tès Sant
Shandong Metallurgical Product Kalite Sipèvizyon ak Estasyon Enspeksyon
Jinan Iron and Steel Group Corporation