KUNSHAN YONGLI STANDAARD FAETENERS MANUFACTURING CO.,LTD －The company has become a specialty that can produce all bolts&nuts in specifications. It also has physi-chemical analysis instruments for testing material compositions, metallograph (analyzing the structure of raw material correctly and clearly). Tensile testing machine (judging the load, bending strength, pulling strength, elongation of bolts after quenching, can strictly control quality by testing and ensure clients’ benefit). Advanced digital hardometers (testing the hardness and safe load of bolts) etc. testing equipments. Add:Yushan Town,Kunshan,Suzhou city,Jiangsu province,China