LANGUAN 680 is a solvent-free two-component epoxy primer with great penetration and sealing capacity. It consolidates porous concrete bases, blocks substrate moisture, and creates a firm bonding layer to support subsequent epoxy flooring or cement self-leveling construction, effectively preventing common floor detachment and bubbling defects.
Customized for all LANGUAN complete flooring systems, including epoxy resin floors and cement-based self-leveling floors, widely used in industrial workshops, warehouses, parking lots and commercial space renovation. Applicable Base Surfaces: New concrete ground, old cement floors, porous base layers It serves as essential sealing and priming treatment before intermediate repair mortar and self-leveling construction.
It adopts A:B=15:5 matching ratio, with 35 mins pot life at 23°C, walkable after 8–10 hours and 24-hour minimum recoating interval; one full set covers 40–80㎡. Solvent-free eco formula, strong penetration sealing and high adhesion; needs sand broadcasting for mechanical anchoring under self-leveling systems. Packaged as 15kg A + 5kg B, unopened shelf life reaches 24 months under dry, shaded 5–30°C frost-free storage; only applicable when surface RH≤75% and temperature ≥10°C with full ventilation during construction.
Guangdong, China – 2026 – China Construction Eighth Engineering Division Corp., Ltd., the Guangdong Flooring Association and LANGUAN recently signed a strategic cooperation agreement in Guangdong.
Zhengzhou, China – April 2026 – LANGUAN is advancing the development of a new manufacturing project in Zhengzhou, Henan Province, as part of its continuing investment in production capacity and regional supply capabilities.
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