北京国建联信认证中心有限公司业务范围包括产品认证、服务认证、管理体系认证和相关国推认证等。

产品认证领域包括：矿和矿物；电力、可燃气和水；纺织品、服装和皮革制品；木材和木制品；纸浆、纸和纸制品，印刷品；化工类产品；建材产品；家具；其他未分类产品；金属材料及金属制品；机械设备及零部件。

服务认证领域包括：批发业和零售业服务；不动产服务；科学研究服务（研究和开发服务；专业、科学和技术服务；其他专业、科学和技术服务）

管理体系认证领域包括：质量管理体系认证；环境管理体系认证；职业健康安全管理体系认证。

国推认证包括：能源管理体系；测量管理体系；低碳产品：通用硅酸盐水泥、平板玻璃、铝合金建筑型材、中小型三相异步电动、机陶瓷砖（板）、纺织面料、轮胎；绿色产品（认证活动一）：人造板和木质地板、建筑玻璃、家具；绝热材料；防水与密封材料；陶瓷砖（板）；木塑制品；纸和纸制品；塑料制品；绿色产品（认证活动二）：建材（围护结构及混凝土类）、建材（门窗幕墙及装饰装修类）、建材（防水密封及建筑涂料类）、建材(给排水及水处理设备类）。

The business scope of Beijing Guojian Lianxin Certification Center Co., Ltd. includes product certification, service certification, management system certification .

Product certification areas include: Minerals & Minerals; electricity, combustible gas and water; textiles, clothing and leather goods; timber and wood products; pulp, paper and paper products, printed matter; chemical products; building materials products; Furniture; Other uncategorized products; metal materials and metal products; Machinery and equipment and parts.

Service certification areas include: wholesale and retail services; real estate services; Scientific research services (research and development services; professional, scientific and technical services; Other professional, scientific and technical services)

The areas of management system certification include: quality management system certification; Environmental Management System Certification; Occupational health and safety management system certification.

The national certification includes: energy management systems;measurement management system;low-carbon products: general Portland cement, flat glass, aluminum alloy building profiles, small and medium-sized three-phase asynchronous motors, mechanical ceramic bricks (plates), textile fabrics, tires; Green products (certification activity 1): wood-based panels and wooden flooring, architectural glass, furniture; thermal insulation; waterproofing and sealing materials; ceramic bricks (plates); wood-plastic products; paper and paper products; plastic products; Green products (certification activity 2): building materials (envelope structure and concrete), building materials (doors, windows, curtain walls and decoration), building materials (waterproof sealing and architectural coatings), building materials (water supply, drainage and water treatment equipment).