Product Description
MEMBRANE MATERIALS |
RO FLAT SHEET |
Generation |
Type |
Model |
Salt Rejection(%) |
Flow Rate(GFD at 25°C) |
RO Flat Sheet |
Domestic |
XLP-HF-D |
>97.5 |
>27 |
ULP-2-D |
>99.4 |
>17.0±3.0 |
ULP-3-D |
>99.3 |
>21.0±3.0 |
RO Flat Sheet |
Industrial |
XLP-HF-I |
>97.5 |
>54 |
ULP-2- |
>99.55 |
>30.0±3.0 |
ULP-3- |
>99.45 |
>41.0±3.0 |
BW |
>99.6 |
>30.0±3.0 |
FR |
>99.65 |
>27.0±3.0 |
BW-HF |
>99.55 |
>34.0±3.0 |
SW |
>99.7 |
>21.0±3.0 |
PERMEATE CARRIER |
|
Type |
Class |
Materia |
Antimony Value |
|
|
A |
Special PET |
No antimony |
Permeate Carrier |
Domestic/Industrial |
B |
PET With coating |
Costeffectivewith extremely lowantimony |
|
|
C |
PET+Special PET |
Low cost with low antimony |
|
|
|
|
|
FEED SPACER |
|
Type |
Class |
Model |
Material/Feature |
Feed Spacer |
Domestic/Industrial |
Normal |
PP Series |
PP |
AN Series |
Antimicrobial Polymer |
PE Series |
HDPE &LDPE |
Special |
SP Series |
TWQ for Domestic Membrane |
BWQ for Low Pressure Drop |
PA/PBT for Oil Filter |
Detailed Photos


Company Profile
Who are we: Sandmonk Technology Co., Ltd. is a distinguished international titan in the realm of reverse osmosis membranes, setting benchmarks for excellence and innovation. Renowned for our expertise, we are an elite player in the high-performance R O membranes sector, especially in the high-salinity water domain. Proudly aligned with global humanitarian efforts, we are a generous contributing enterprise to the United Nations Children's Fund, enhancing lives worldwide. Our commitment to education is steadfast, as evidenced by our consistent monthly donations to the Honghui Education Foundation, nurturing future generations.
Visionary in our pursuit, HJC aspires to transform the vast seawater expanse covering two-thirds of our planet into a replenishable freshwater reservoir, all while venturing into pioneering synthetic technologies for extraterrestrial water. Driven by a passion for progress, our mission is to continuously innovate within the high salinity water technology space.
Our primary focus is the comprehensive integration of the R O membrane industry chain, paired with groundbreaking research and development of essential components. We excel in mastering techniques for purifying high salinity water, with a strategic emphasis on nurturing the global high salinity water regional and seawater desalination markets. Our products enjoy a robust international presence, with exports ensuring stable market channels and widespread popularity across numerous nations. The brand HJC is a testament to quality and reliability, becoming a household name in over 70 countries worldwide.
HJC Road Map:
Founded in 2013, we laid the cornerstone for a journey of innovation and excellence.
In a revolutionary leap forward, 2015 marked our technological breakthrough with the development of 4-layer reverse osmosis membranes.
By 2017, we had carved out a significant presence in the Indian market, amassing over 20 dedicated agents and achieving widespread brand recognition.
2018 saw the introduction of a cutting-edge, third-generation household film, setting a new standard in the market.
The launch of the 4th generation household film in 2019 further solidified our position as industry leaders.
In 2020, we unveiled the revolutionary 5th generation side flow household film, continuing our legacy of innovation.
2022 was marked by the debut of our industrial membranes, catering to a diverse range of industrial applications.
In 2023, we expanded our offerings with the release of seawater and nanofiltration membranes, pushing the boundaries of filtration technology.
2024 ushered in the release of our advanced TFN membranes, showcasing our commitment to cutting-edge innovation.

Our Factory


Exhibition

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FAQ
QUESTION |
ANSWER |
Are you a factory or trading company? |
Yes, we have our own factory. |
Can you offer OEM service? |
Yes, OEM is OK. |
Can I get samples from you factory? |
Sure. We are pleased to. |
What would you do if some quality problem occur? |
We will be responsible to all quality problem. |