Company Profile
Who We Are
Kangjing (Qingyun Kangjing Building Materials Co., Ltd.) is a high-tech innovative enterprise invested and established by Shandong Kangjing New Materials Co., Ltd., focusing on ultrafine and nanoscale inorganic mineral materials.
We provide systematic solutions for grouting leakage sealing and structural reinforcement in global geotechnical engineering and major infrastructure projects.
Our headquarters is located in Qingyun, Dezhou (Shandong, China), with a 23,000 m² smart manufacturing base and an annual capacity of 500,000 tons, enabling stable supply for large-scale projects.
What We Manufacture
We manufacture functional new materials for underground geotechnical engineering, built around a clear technical positioning: Ultrafine and nanoscale inorganic mineral sealing and consolidation materials.
Our product portfolio includes:
Ultrafine Cement (Microfine Cement) — particle size typically 1–10 μm, high permeability and dense consolidation for complex geological conditions such as tunnel faces, dam foundations and fractured zones.
Ultrafine Oil & Gas Well Cement — designed for high-temperature/high-pressure well cementing and leakage repair, maintaining stable isolation performance in harsh downhole environments.
Ultrafine GGBS / Mineral Admixtures — ultrafine ground slag with avg. particle size <5 μm, D10 <1 μm, surface area >2000 m²/kg, chloride <0.02, improving early strength, workability and durability while reducing hydration heat.
High-Performance Mineral Activator — inorganic mineral activator (mainly CaO and Al₂O₃) with avg. particle size <3 μm, D10 <1 μm, surface area >2000 m²/kg, and 1-day activity index up to 122 (BET up to 5097 m²/kg) for UHPC and advanced cementitious systems.
Why Trust Kangjing
Clear engineering capability: Our core function is
Sealing · Permeation · Consolidation (Three-in-One), providing an integrated approach to seepage control and structural strengthening.
Scale & stable supply: 23,000 m² smart manufacturing base and 500,000 tons/year capacity support continuous supply for major projects.
International certifications & R&D: We are certified with ISO9001, ISO14001, OHSAS18001 and API, and have an ultrafine cement key laboratory with multiple patented technologies.
Proven performance: For oil & gas applications, our solutions help increase oil & gas recovery (typically 3%–5%) and reduce non-productive time by 60%–70% in relevant scenarios.
Applications We Serve
Kangjing materials are widely used in underground geotechnical engineering, including:
Mining
Oil & Gas Wells
Tunnels & Subways
Hydropower / Water Conservancy Projects
Military Defense Protection & special underground projects
Our ultrafine cement and sealing materials have been applied in scenarios such as metro/tunnel waterproof grouting, fractured zone treatment in mines, dam and groundwater sealing, and oil & geothermal well leakage repair—helping improve impermeability and long-term stability under complex geological conditions.
Contact Our Engineers
Share your project details (application scenario, crack size, seepage condition, temperature/pressure requirement, and required setting time). Our engineers will recommend the suitable grade and provide a technical proposal based on your site conditions.
Quick Inquiry (Reply in 12 hours):Product: Ultrafine Cement / Well Cement / GGBS / Activator
Application: Tunnel / Mining / Oil & Gas / Hydropower
Required specs & quantity
Contact: Email / WhatsApp
(Place your inquiry form here.)
*Note: Please ensure that the information you provide is accurate and that your contact details remain up-to-date. We will get in touch with you as soon as possible.
Kang Jing's Official Account
Kang Jing WeChat Customer Service
Northwest Center: Shaanxi, Xi'an, Weiyang, Room 2002, Rongmin Group
Email:
Website:
WhatsApp：8618809236578
Ms. Jin：+86 18165358316
International email：jinshipolkmn@gmail.com
Domestic email：kjgf@crystalnew.cn