National Torch Plan"programs.In 2003,the "martensitic stainless steel nitrading piston rings"were praised as one of the "National Key Torch Plan"

• 1995年“高性能钢质活塞环”和1998年推出的“马氏体不锈钢氮化活塞环”相继被列为“国家级火炬计划”项目。