Yifeng Ebuy Industry and Trade (Lanzhou) Co., Ltd. Qinghai Branch (hereinafter referred to as "Yifeng Ebuy") is a specialized technology company engaged in the production of grouting materials, pressure grouting materials, ultra-fine cement, bearing mortar, micro-expansion grouting materials, M50 rigid and non-shrinkable mortar, ultra-fine silicate cement, anchoring mortar, anchor agents, rapid-setting agents, ground heat micro-expansion cement, and polyvinyl acetate emulsion mortar, etc., exclusively serving the railway and highway system integration. Company Achievements: CZ Railway, China-Laos Railway, Xi'an-Chengdu High-Speed Railway, Shanwan Railway, etc.; production and manufacturing, design and construction, independent research and development, technical support, and national standard quality.