... hardness 3high precision 4OEM/ODM accepted 5ISO9001:2008 certificate Grass cutting machine parts in powder metallurgy Features: 1High density ... Metallurgy production process:Quality Control Flow:Company Detailed Descriptions:1. Zhejiang Xinhe Powder Metallurgy Co., Ltd is a ... steel, copper steel, copper molybdenum steel, alloy.4. Production equipment:a. Hydraulic press with 200T, 160T, 100T, 60T, 50T ...