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 Dear customers,

GRENEX LIMITED is the new name of former Hyein Engineering Co., Ltd., which was established in Feb. 2002. We consider this moment as a brand-new start for us to make a successful leap to the international environmental business.

" GREEN EXCELLENCE "
" GENUINE HAPPINESS "
" GLOBAL BUSINESS "

These are our corporate policies, we took 'GREEN EXCELLENCE' which means supplying environmentally friendly services and products for our new corporate name GRENEX.

Since founded in Feb. 2002, we have established infrastructure covering three sales sectors and have showed great performance.

'Environmental Consulting', one of the three sectors, focuses on feasibility studies for projects, basic design, detailed design, and project management. For this, we are now registered as a consultant for the Africa Development Bank (AFDB), World Bank, and Asia Development Bank (ADB). Based on our highly capable and experienced staff, we provide consulting services for international environmental projects.

Clarification and wastewater/sewage treatment system sector comes the second. For this treatment, we provide system solutions and products with MSBR, AquaSBR of Aqua-Aerobic Systems, Inc. (U.S.A), Anaerobic Hybrid (for highly-concentrated organic wastewater treatment with high rate of volume load) of ADI Systems Inc. (Canada), and others such as Automatic Backwash Sand Filter, Disk Filter, Evaporator for coolant treatment, and other systems for clarification. With this sector, we have listed as a venture corporation in Korea.

The third sector is about equipment sales and construction. We provide various wastewater treatment equipments such as Surface Aerator, Mixer, Polymer Feeder, and Oil Skimmer. We also supply liquid storage tanks and pressure vessels via site-fabrication or OEM.

Ever since GRENEX was founded, we have been keeping in pace of increasing global concerns about the environment and trying to meet our customers needs. On the basis of integrity and experiences, we will be always there where our customers need, in any place, at any time.

Thank you.

Chung Chang (James) Kuk
CEO & President
GRENEX LIMITED