1.High hardness:60-65HRC 2.No breakage 3.Even wearing 4Good Abrasive Resistance 1.The Jinan Hua Fu Forging Co., Ltd. has 10 years of experience in ball production, the products are exported to South America, Australia, South Africa, Finland, Russia, Japan, South Korea and other countries, production in strict accordance with the ISO9001 international quality system standard production,just hope ...