Professional Underground Leak Sealing Since 2005 Contact: Manager Xie
Hotline: +86 131 0520 1853
🌐 中文

Ending Leaks in Underground Structures — Permanently

Tongliang Waterproofing solves the toughest seepage problems in tunnels, underground garages, basements, reservoirs, metro lines, utility tunnels and civil defense works using proprietary grouts and advanced injection technology.

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20+Years of Experience
7Core Service Areas
8Proprietary Products
1000sProjects Completed
24/7 Leak Sealing Emergency Hotline — Call Now: +86 131 0520 1853

Why Choose Tongliang

A specialized contractor and material manufacturer in one — we diagnose the leak, make the material, and guarantee the result.

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20+ Years of Experience

Two decades focused exclusively on underground leakage problems, with proven methods refined on thousands of difficult defects.

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Reliable Materials

We manufacture our own AS grout, specialty grouts, epoxy resins and crystalline waterproofers, tested on real projects.

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Professional Teams

Certified waterproofing crews and engineers handle survey, injection, structural repair and quality control.

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After-Sales Assurance

Clear warranties, prompt return visits and long-term tracking on every completed sealing project.

Our Services

Seven core waterproofing and leak-sealing services covering every type of underground concrete structure.

Underground Utility Tunnel Sealing

Underground Utility Tunnel Sealing

Leak detection and grout-injection repair for comprehensive underground pipe galleries and utility tunnels.

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Water Reservoir Leak Sealing

Water Reservoir Leak Sealing

Permanent sealing of drinking-water reservoirs, storage tanks, pools and hydraulic concrete structures.

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Tunnel Leak Sealing

Tunnel Leak Sealing

Waterstop and consolidation grouting for highway, railway and hydraulic tunnels under flowing water.

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Metro & Subway Waterproofing

Metro & Subway Waterproofing

Segment-joint and crack repair for metro tunnels and stations without disrupting operations.

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Underground Parking Garage Repair

Underground Parking Garage Repair

Stopping floor-slab, expansion-joint and wall leaks in underground parking structures.

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Basement Leak Repair

Basement Leak Repair

Negative-side waterproofing, crack injection and structural repair for building basements.

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Civil Air-Defense Works

Civil Air-Defense Works

Sealing and durability restoration for underground civil defense and wartime-protection structures.

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Core Products

Proprietary grouts, resins and crystalline waterproofers developed and manufactured in-house for demanding sealing work.

AS Grout

AS Grout

Dual-component polyhydroxyl esterified grout with self-healing, secondary-repair capability.

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High-Strength Specialty Grout

High-Strength Specialty Grout

High-performance injection grout for strong consolidation of severe leaks and weak strata.

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Specialty Epoxy Resin

Specialty Epoxy Resin

Eco-friendly high-penetration modified epoxy grouts and protective coatings for concrete.

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Waterproof Master

Waterproof Master

Non-toxic inorganic waterproofing powder for rapid leak plugging on wet surfaces.

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DPS Crystalline Agent

DPS Crystalline Agent

DPS penetrative crystalline waterproofing agent that seals concrete from within.

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Cementitious Capillary Coating

Cementitious Capillary Coating

Cement-based capillary crystalline waterproofing coating with permanent active crystallization.

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Keqiangshen Anti-Seepage

Keqiangshen Anti-Seepage

Concentrated silicone water-repellent agent for exterior walls and façades.

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703 Waterproofing Agent

703 Waterproofing Agent

Deep-penetration water-repellent agent with permanent breathable waterproofing.

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How We Work

A disciplined six-step process from the first call to final acceptance.

Consultation

Tell us the leak symptoms by phone or message.

Site Survey

Engineers inspect and locate water paths.

Quotation

A transparent scheme and fixed quote are issued.

Contract

Scope, warranty and schedule are confirmed.

Construction

Trained crews inject, seal and repair the structure.

Acceptance

Joint inspection and warranty handover.

Tongliang Waterproofing crew sealing leaking concrete cracks

About Tongliang Waterproofing

Tongliang Waterproof & Leak Sealing Co., Ltd. is based in Laizhou, Shandong Province, and focuses exclusively on seepage control for underground engineering.

Our mission is simple: to end leakage in underground structures. Relying on our own AS grout, high-strength specialty grout and specialty epoxy resin — combined with modern electro-osmotic and pressure-injection techniques — we build a diversified solution system for every kind of leak, from damp staining to pressurized flowing water.

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Have a Leak That Needs Stopping?

Talk to our engineers today. Fast site surveys, honest quotes and lasting results.

Call +86 131 0520 1853