50G,75G,100G Domestic Ro membrane

The 3rd Generation Domestic RO membrane from HJC International Com. Ltd. is manufactured in Changsha, Hunan Province, China, and designed for residential under-sink and countertop reverse osmosis systems. This series covers six model configurations: 1812-50, 1812-75, 2012-100, 2012-150, 3012-300 and 3012-400, with standard operating pressure of 60 psi and nominal salt rejection of 98%. Flow rates span 50, 75, 100, 150, 300 and 400 gallons per day (GPD), while effective membrane areas ranges from 3.5 ft² up to 40 ft² depending on model. These thin-film composite (TFC) membranes fit industry-standard housings and connect via 1812, 2012 or 3012 dimensional formats, making them compatible with most domestic RO systems on the market.

The membrane active layer is typically a polyamide thin film formed on a polysulfone support substrate, a standard construction for residential RO elements rated below 100 psi. Salt rejection performance of 98% at 60 psi indicates a standard domestic-grade membrane rather than a high-rejection industrial variant, suitable for municipal tap water with total dissolved solids (TDS) below 1000 ppm. Effective membrane area scales with GPD rating: the 50 GPD unit uses 3.5 ft², the 75 GPD unit uses 4.2 ft², the 100 GPD unit uses 5.0 ft², the 150 GPD unit uses 5.2 ft², and the 300 GPD and 400 GPD units jump to 36 ft² and 40 ft² respectively, reflecting larger 3012 format diameters. Typical feed water temperature range for these membranes is 4-45°C, with optimal performance at 25°C. pH tolerance is generally 2-11 for short-term cleaning and 3-10 for continuous operation, though buyers should confirm exact chemical compatibility with HJC International Com. Ltd. before deploying sanitising agents.

Target buyers include OEM assemblers of residential RO systems, aftermarket spare-part distributors, and ecommerce operators serving the home water-treatment segment. The 1812 and 2012 formats suit compact under-sink units, while the 3012 format supports higher-output countertop or light commercial applications. Buyers should confirm with HJC International Com. Ltd. whether housings, O-rings and flow restrictors are included or must be sourced separately, as the listing specifies membrane elements only. Packaging, MOQ, lead times and Incoterms are not stated in the source data and must be verified directly with the supplier. International buyers should also request membrane test reports verifying actual salt rejection and flux under standard test conditions (500 ppm NaCl, 25°C, pH 7.5, 15% recovery), as factory performance can vary from catalog values.

HJC International Com. Ltd. is headquartered in Changsha, Hunan Province, China, with a registered address at Room 33037, Plot 2, Beicheng Deltakaifu, postal code 410005. The supplier holds a Harbor trust tier on the platform, indicating a baseline verification level, though the response rate is shown as 0.00% with an average response time of zero hours. This suggests the profile may be newly listed or currently inactive in responding to enquiries, so buyers should test communication channels before relying on this supplier for time-sensitive orders. No information on factory ownership, production capacity, or years in operation is provided in the source data.

The listing focuses exclusively on 3rd Generation Domestic RO membranes across six GPD ratings, with no mention of other water-treatment product lines, custom membrane development, or value-added services such as private-label packaging. Buyers seeking bulk supply, OEM branding, or technical support should clarify these capabilities directly with HJC International Com. Ltd. The supplier's location in Changsha places it inland relative to major Chinese export ports such as Shenzhen or Shanghai, so logistics routing and inland freight arrangements warrant explicit discussion.