Copper heatsink Copper Heat Conductivity Plate

Copper heatsink ( Copper Heat Conductivity Plate ) Greeting Message Our company, Durim Co. Ltd will always think of health, environment, and happiness, contribute to the green-growth by supplying a masterpiece, "Durim copper heat conductivity plate" as an Eco-friendly product, finally, we will contribute to form the beautiful society by upgrading the quality of life. We would always do our best to supply the best quality of product constantly, and always consider customers first. Thinking of Health ! Thinking of Environment ! Thinking of Happiness ! Durim Co. Ltd DURIM CO. , LTD. 02

Copper heatsink ( Copper Heat Conductivity Plate ) Overview and History April, 1985. Establishment of Durim February 1998. Development of aluminum thermal conduction plate for construction April, 1998. Durim was aired on "KBS ONE dollar site at KBS 9 pm News. September, 2006. Patent Registration of Aluminum thermal Conduction plate for Ondol (Korean underfloor heating system). December, 2006. Establishment of Factory for Heatsink for Ondol in Ansan city February, 2007. Installation of the first production equipment of Heatsink for Ondol. August, 2007. Installation of the second production equipment of copper plating heatsink for Ondol March, 2008. Patent Registration of copper plating heatsink for Ondol. DURIM CO. , LTD. 03

PRODUCT CONTENTS 1. Introduction of Product 2. Overview of Product 3. Effect of Installation 4. Construction way 5. Evaluation about test and result 6. References 7. Press releases 8. Application cases of cooper heatsink 9. Yearly sales status 10. Track records DURIM CO. , LTD. 04

Copper heatsink ( Copper Heat Conductivity Plate ) 1. Introduction Copper Heatsink 1. Decrease more than 20% of heating bills owing to high heat conductivity 2. Copper heatsink has an effect on blocking 98~99% of harmful electromagnetic waves. (The test result by Korea Research Institute of Standard and Science) 3. Copper Heatsink has the same water vein blocking effect with one of copper plate of 99% purity. The test result by Korea Shape Energy Research Institute ) 4. Crack prevention effect (The test result by Hyundai Institute of Construction Technology) After laying copper heatsink having 140 times faster in heat conductivity than that of existing mortar, as a result of temperature deviation test of floor, the floor temperature was lowered around 3~7 degrees, and then the heat valley shape was removed so that the heating amenity was improved. DURIM CO. , LTD. 05

Copper heatsink ( Copper Heat Conductivity Plate ) 2. Overview Product Effect Compositi on Copper heatsink 1. reduction of more than 20% of heating cost. 2. Blocking effect of hazardous electromagnetic waves. 3. crack prevention. 1. Dimensions : 0. 30 mm Х 320 mm Х 78. 4 M ROLL ( Plate 25㎡ standard ) 0. 30 mm Х 640 mm Х 78. 4 M ROLL ( Plate 50㎡ standard ) 2. Ingredients Highly porous copper-plated heat conductivity plate of aluminum treated with soft nitriding. (Aluminium Coppered Perforated Plate) After installing hot water pipe for heating on aerated Constructi concrete, widely unfold and lay copper plating heatsink to be on way contacted with upper part of pipe, and place cement mortar or remital on it. DURIM CO. , LTD. 06

Copper heatsink ( Copper Heat Conductivity Plate ) 3. Installation Effect * Blocking Effect of water vein and hazardous electromagnetic waves Copper plating heatsink provides comfortable living space and healthy life thanks to the blocking effect of water vein and hazardous electromagnetic waves Copper plating heatsink has the same blocking effect of water vein with one of copper plate of 99. 9% purity. (The test result by Korea Research Institute of Shape Energy ) Copper plating heatsink has the blocking effect of hazardous electromagnetic waves up to 98~99%. (The test result by Korean EMC research institute) * Saving heating cost of 20% with the heat storage on wide area Copper plating heatsink transfers heating evenly and quickly, and maintains stable thermal environment by heat storage in wide area of the whole mortar layers between heating pipes, so, it can reduce heating cost up to 20%. (Hyundai Institute of Construction Technology) Especially, in case of using marble or wooden finishing materials, it complement the weakness of material having poor function to be heated by copper plating heatsink as well as maximizes the strength of excellent function of heat storage DURIM CO. , LTD. 07

Copper heatsink ( Copper Heat Conductivity Plate ) 4. Construction way ⑴. Before laying copper plating heatsink/ after laying only X-L pipe ⑷. Completion of laying of copper plating heatsink (restoring bended part) ⑵. Under laying copper plating heatsink (unfolding rolled heatsink and lay it on pipes evenly) ⑸ plastering of remital (mortar). ⑶. Fixing up copper plating heatsink. tightening it firmly using U-clip) ⑹. the figure after the completion of plastering of remital DURIM CO. , LTD. 08

Copper heatsink ( Copper Heat Conductivity Plate ) 5. The test result * Experiment for each 1 household with 100 ㎡ (1) Title of research Comparative evaluation of Ondol performance according to the installation of Copper plating heatsink (2) Goal of research the goal is to examine and evaluate the applicability of copper plating heatsink having high thermal conductivity to apartment buildings Anti-crack admixture Division Laying of metal lath Laying of copper heatsink Generation of more than 0. 8 mm crack to be repaired Generation of 13. 5 m Generation of 4. 6 m None Generation of hairline cracks having no need to be repaired Generation of 31. 8 m Generation of 17. 5 m Generation of 10. 6 m Degree of crack prevention 100% 200% 400% Crack Repair Cost 50 thousands won/ household 30 thousands won/household Remark s 0 won /household * Refer to the test result by Hyundai Institute of Construction Technology * Tensile strength test Test area Current situation Laying of heatsink Remarks Mortar floor 0 kg/mm 2 9~12 kg/mm 2 Tensile strength of mortar floor was improved (In case of no inserting copper plating heatsink) * Refer to the test result by Hyundai Institute of Construction Technology (In case of inserting copper plating heatsink) DURIM CO. , LTD. 09

Copper heatsink ( Copper Heat Conductivity Plate ) 5. The test result * Heating efficiency review Items Unit Normal construction Laying of heatsink Effect and performance Heat-conductivity w/m℃ 1. 6 222 140 times of heatingconductivity 20 minutes 5 minutes 4 times faster 3 minutes 24. 3℃ 26. 4℃ 2. 1℃ gaps 5 minutes 24. 3℃ 26. 6℃ 2. 3℃ gaps 10 minutes 24. 8℃ 27. 3℃ 2. 5℃ gaps 20 minutes 26. 7℃ 29. 2℃ 2. 5℃ gaps Heating temperature(26. 6 ℃) Comparison of temperature rise Minutes Refer to the test result by Hyundai Institute of Construction Technology * Heating amount review Division Setting up room temperature Source of supply Of the heating water Heating hours Required Heating amount (kcal) Saved heating amount (kcal) Saved cost in the heating amount Existing construction way Set on 45℃ Water circulation tank Continuous heating for 8 hours 38, 120 0 0% Laying of Copper heatsink Set on 45℃ Water circulation tank Continuous heating for 8 hours 30, 266 7, 834 Be saved by 20% Refer to the test result by Hyundai Institute of Construction Technology DURIM CO. , LTD. 10

Copper heatsink ( Copper Heat Conductivity Plate ) 5. The test result * Comparison of far-infrared photos No I N S E R T I O n After 3 mins After 5 mins After 10 mins After 20 mins I N S E R T I O n DURIM CO. , LTD. 11

Copper heatsink ( Copper Heat Conductivity Plate ) 6. References * 現代建設新聞 2003년 11월 25일 화요일 6면 업계동향 중 발췌 DURIM CO. , LTD. 12

Copper heatsink ( Copper Heat Conductivity Plate ) 6. References 1. Excerpts from business world section, 6 page, Nov. 25 th, 2003, The Hyundai Engineering & Construction News. Copper Heat Conductivity Plate by Durim Co. Ltd New material As economy and the level of income are getting higher, consumer’s interest in residence and living space is also getting higher. Other than interior field pursuing beauty, effort of problem-solving about energy efficiency such as air-conditioning and heating function of residual life is continued. Durim Co. Ltd, the specialist in building of timber, widows and doors in massive apartment complex, developed “Copper heatsink” being able to block the vein of water and harmful electromagnetic waves by considering our living environment and reduce 20% of heating bills by high heat conductivity, and this product was selected as the new material in Oct. 2002. “Durim Copper heatsink” is the material for construction to use trash material generated from manufacturing condenser case for electrolysis, this product has the form of “net” with many holes in aluminum board by high purity aluminum(99. 3%) with high thermal conductivity. Once installing this plate in the process of construction of floor, heating efficiency becomes high, it improves the quality by crack prevention, and it is the new construction material to provide healthy living space by blocking water vein and hazardous electromagnetic waves. DURIM CO. , LTD. 13

Copper heatsink ( Copper Heat Conductivity Plate ) Prevention of crack of bottom Durim Copper heatsink is the net shape of material with holes on the Durim copper heatsink handled malleably, it coheres at least 35% of tensile strength of cement mortar ignored as almost 0% of tensile strength, after heating for 2~3 years, crack on the hot water pipe can be prevented. Additionally, reducing more 10 mm of existing mortar depth than normal construction, actualizing prevention of crack of concrete bottom, decreasing the whole weight by being slim of mortar floor, so, the cost on pillar, wrapping can be reduced. Like above things, aluminum heatsink having a significant effect on energy efficiency such as comfortable heating, and 20% of heating cost, and health management such as prevention from water vein and hazardous electromagnetic waves has a simple way to construct; After installing hot water pipe for heating above slab, unfold and lay aluminum heatsink(32 cm) widely on the pipe, and once installing cement mortar or remital, construction is completed. Thus, by applying Durim Copper heatsink, it can maximize and differentiate the effect of parcel out owing to the reduction of heating cost, improvement of quality of construction, blockage of water vein, we can expect the effects such as the reduction of following cost by crack maintenance in terms of internal area. DURIM CO. , LTD. 14

Copper heatsink ( Copper Heat Conductivity Plate ) Effect of blocking water vein and electromagnetic waves Durim Copper heatsink is the material with high purity aluminum(99. 3%), so, it has the same effect of the blocking of water vein with one of copper plate in 99. 9% purity because magnetic field was generated in the circular ring structure. Radiation of electromagnetic waves from electronic products in our daily life has made 700~800 MHz, Durim Copper heatsink provides healthy living life because it blocks 99% of electromagnetic waves. Effect on reduction of heating bills Owing to fast heat conductivity Reduction of 20% of heating cost Several different things generate by condition of boiler and pipe, but, normally, for heating, 70~80% of heating efficiency is generated, so, namely, it is the true that 20~30% of energy is consuming. However, During Copper heatsink built on Ondol pipe has remarkable thermal conductivity (about 140 times in quantity), so operating boiler, temperate spreads evenly all over the floor( before insertion: 26. 7 degree, reach time: 20 min, after insertion; 5 min), finally, it reduce the 20% of heating owing to decreasing heating operating time. Additionally, It solves uncomfortable feeling by a heat valley phenomenon (getting warm around the space boiler pipe passing, the other ones gets cold), and provides comfortable living space. DURIM CO. , LTD. 15

Copper heatsink ( Copper Heat Conductivity Plate ) 7. Press releases [홈&마트] 열전도 좋은 ‘동 도금 방열판’ 인기 동 도금 활용 바닥용 방열판 개발 입력 : 2000. 04. 24 19: 02 10' 입력 : 2001. 09. 13 20: 07 54‘ 전기 제품 생산 후에 생기는 동을 활용, 전자파를 차 단하는 주택 바닥용 방열판이 개발됐다. 이 제품을 공 동개발한 건자재 공급업체 ㈜두림는 삼성중공업·롯데 건설·두산건설·쌍용건설·벽산건설·중앙건설 등 주택 건설사들이 새로 짓는 아파트와 고급 빌라의 모델하 우스와 현장에 이 방열판을 시공했다고 말했다. ㈜두 림은 “연구기관의 시험 결과 이 방열판은 유해 전자파 와 수맥파를 차단할 뿐 아니라 높은 열전도율로 난방 비를 20% 이상 줄일 수 있는 것으로 나타났다”고 말 했다. ☎ 02 -547 -3391 ( 장원준기자 wjjang@chosun. com ) 열전도율이 높아 난방비가 평균 20% 절약되고 수맥파까지 차 단하는 방열판이 인기를 모으고 있다. 건축자재 공급업체인 ㈜두림는 시판중인 순도 99. 3%의 동 도금 방열판을 난방 파 이프와 시멘트 몰탈 사이에 시공할 경우 난방비를 20~30% 줄이고 방바닥 균열을 최소화할 수 있다고 설명했다. 라미우 드측은 “열전도율이 높은 동 도금 방열판이 난방 파이프 사이 로 열을 전달해 방 전체를 골고루 데워준다”고 말했다. 에너지 관리공단 조사에 따르면 방열판을 깔았을 경우에는 난방 가동 후 5분만에 26. 6도가 되지만 방열판을 깔지 않았을 경우엔 같 은 온도에 도달하기까지 시간이 네배가 많은 20분이나 걸렸다. 이밖에 동 도금 방열판은 인체에 해를 끼치는 수맥 유해파를 차단하는데도 효과가 있다는 것이 ㈜두림측의 설명. 가격은 1 평에 1만5, 000원선(시공비 별도)으로 쌍용아파트 수원 신영 통단지, 부산 거제동단지, 구리 퇴계원 단지 등 대규모 아파트 건설 때 ㈜두림 방열판이 시공된 바 있으며 서울 도곡동 삼성 아파트도 시공 예정이다. 이 방열판은 경기도 이천의 콘덴서 케이스 제조업체인 동영전자공업이 생산하는 것으로 연간 생 산량이 20만가구 규모에 이른다. 문의 02 -547 -3391 (* 박순 욱기자 swpark@chosun. com*) DURIM CO. , LTD. 16

Copper heatsink ( Copper Heat Conductivity Plate ) 7. Press releases (Home& Mart) Popularity of ‘Copper heatsink with good heating conductivity Input: April, 24 th, 2000, 19: 02 10’ Owing to high heating conductivity, heatsink reducing average 20% of heating cost and blocking water vein is getting popular. Durim Co. , Ltd, a supplier of construction material, has explained that 20~30% of heating cost can be reduced and crack in floor can be minimized when constructing purity 99. 3% of Copper heatsink between heating pipe and cement mortar. Rami wood said, “Copper heatsink with high heating conductivity makes it warm evenly all over the room by transferring heating to space of heating pipe. ” According to research by Energy Management Corporation, in case of laying heatsink, it becomes 26. 6 degrees after 5 min, but it has taken 20 min as 4 times to reach the same degrees, 26. 6 degrees in case of no laying heatsink. Besides, Copper heatsink has an effect on blocking hazardous water vein and electromagnetic waves. The price is 15000 KW per 1 pyeong (separately from Construction cost), so constructing massive apartment complex such as Shin young tong complex in Suwon, Geojedong compex in Busan, Toigeoi won complex in Guri, Durim heatsink has been constructed, it will be built in Samsung apartment in Dogok dong, Seoul. This heatsink has been produced by Dongyoung electronics, a manufacturer of condenser case in Ichon, Gyeonggi do, yearly product quantity has reached 200000 households. For Inquiry: 02 -547 -3391 (Reporter: Park Sunwook. swpark@chosun. com) DURIM CO. , LTD. 17

Copper heatsink ( Copper Heat Conductivity Plate ) Development of heatsink for floor by using copper Input: September 13 th, 2001. 20: 07 54’ Heating Plate for house floor has been developed to block electromagnetic waves by using copper after producing electric product, . Durim Co. Ltd, the supplier for construction material to co-develop this product, has laid this heatsink in new apartments by house construction companies such as Samsung heavy industrial, Lotte Construction, Doosan Construction, Ssangyong Construction, Byeok san Construction, Choongang Construction, and in model house and site of high class villa. Durim Co. Ltd said, “as the test result of research institute, this heatsink can not only block water vein and hazardous electromagnetic waves but also reduce 20% of heating cost thanks to high thermal conductivity. For Inquiry: 02 -547 -3391. (Reporter: Jang Wonjun wjjang@chosun. com) Chosun Ilbo. DURIM CO. , LTD. 18

Copper heatsink ( Copper Heat Conductivity Plate ) 8. Application cases of Copper heatsink POSCO Construction Konkuk University STAR CITY Copper heatsink In case of existing type of Ondol heating system, temperature is high only on the upper part of hot water pipe, while temperature is relatively lower in the central part generating 20 cm gap between pipe and pipe, so heat can not be spread evenly on the floor, also crack is generated after time goes. To solve this problem, the # STAR CITY is using the copper heatsink between Ondol pipe and cement mortar when constructing floor, it can maintain comfortable heating condition by quick thermal conductivity having the shape of “net” with many holes on copper heatsink with high thermal conductivity, it can reduce heating cost and prevent crack on floor. Besides, it has an effect on preventing hazardous water vein and electromagnetic waves so that it can improve the health. (Excerpts from catalog) Copper plating heatsink DURIM CO. , LTD. 19

Copper heatsink ( Copper Heat Conductivity Plate ) 8. Application cases of Copper heatsink Daewoo Construction Daewoo Han River BENE CITY Copper heatsink It has effects on not only the reduction of heating cost but the blocking of water vein and electromagnetic waves. (Excerpts from catalog) “The small idea can bring out the big discovery for life. ” Copper plating heatsink DURIM CO. , LTD. 20

Copper heatsink ( Copper Heat Conductivity Plate ) 8. Application cases about Copper heatsink Lotte Construction Castle Gold Park In Daegu city Copper heatsink It improves heating efficiency by laying copper heatsink with high thermal conductivity. “Economic System actualizing economical spirit. ” Copper plating heatsink DURIM CO. , LTD. 21

Copper heatsink ( Copper Heat Conductivity Plate ) 8. Application cases about Copper heatsink Doosan Construction Doosan we’ve in Boon dang Copper heatsink Applying Copper heatsink, it guarantees healthy life by blocking water vein and hazardous electromagnetic waves, furthermore, it can reduce heating cost by improving heating efficiency. (Excerpts from catalog) “You can enjoy clean and comfortable life, perfect security in Doosan we’ve. ” Copper plating heatsink” DURIM CO. , LTD. 22

Copper heatsink ( Copper Heat Conductivity Plate ) 8. Application cases about Copper heatsink SK Construction VIEW in Hadan dong, Busan city Copper heatsink Installing Copper heatsink in the whole floors of apartments having an effect on blocking water vein and electromagnetic waves, you can expect to reduce heating cost and comfortable heating by ultra speed heating (Excepts from catalog) Copper plating heatsink” DURIM CO. , LTD. 23

Copper heatsink ( Copper Heat Conductivity Plate ) 8. Application cases about Copper heatsink Hyundai Industrial and Development I’PARK in Buldang, Cheonan city. Copper heatsink Installing Copper heatsink in the whole floors of apartments having an effect on blocking water vein and electromagnetic waves, you can expect to reduce heating cost and comfortable heating by ultra speed heating (Excepts from catalog) “If water and air become clean, mind can also become clean” Copper plating heatsink DURIM CO. , LTD. 24

Copper heatsink ( Copper Heat Conductivity Plate ) 8. Application cases about Copper heatsink Poongrim Industrial Poongrim I ONE in Weol gok Copper heatsink Installing Copper heatsink to block water vein and hazardous electromagnetic waves in the floor of apartments, it can improve heating efficiency, and reduce heating cost. (Excepts from catalog) “Special Area in the west coast, Special City for happiness. Poongrim I ONE. ” Special life in a special place! The cutting edge system well-matched with the dignity of sea city in 21 st century. The cutting edge system of Poongrim I ONE in Weol gok provides richness and convenience in consideration of all people’s convenience and health. Copper plating heatsink DURIM CO. , LTD. 25

Copper heatsink ( Copper Heat Conductivity Plate ) 9. Yearly sales status and sales plan Unit : ㎡ (700, 000 Pyeong) (621, 200 pyeong) (515, 100 Pyeong) (175, 000 Pyeong) DURIM CO. , LTD. 26

Copper heatsink ( Copper Heat Conductivity Plate ) 10. Track records Name of company Delivery time Remarks Hillstate Southern Seoul 13, 000 2010. 03 Completed 1 st Seongbook in Yongin 27, 900 2009. 10 Completed Hiparion dongtan, in Hwaseong 19, 100 2009. 10 Completed Hillstate in Songdo, Incheon 12, 500 2010. 02 Completed 3 rd hillstate in Keomdan 13, 730 2009. 11 Completed 3 rd Bukhan mountain 14, 600 2009. 10 Completed Heungduk, Yongin Hyundai Construction Quantity (㎡) 13, 800 2009. 10 Completed Nonhyun, Incheon 15, 900 2009. 10 Completed 3 rd new town in Eun Pyong 20, 000 2009. 09 Completed 2 nd, 3 rd Seongbuk, , Yongin 52, 500 2009. 07 Completed Sangmoo, Kwangjoo 45, 900 2009. 06 Completed Geumjeong, Busan 6, 600 2009. 06 Completed 2 nd Geomdam, Incheon 7, 100 2009. 06 Completed 1 st, 2 nd Pajoo city 33, 000 2009. 04 Completed Sanghyun, Yongin 19, 000 2009. 03 Completed Name of Site DURIM CO. , LTD. 27

10. Track records Name of company Delivery time Remarks 21, 680 2008. 10 Completed Wondong in Osan 12, 313 2008. 06 Completed Seoul forest 157, 140 2007. 10 Completed Samsung dong 157, 140 2007. 10 Completed Nonhyun, Incheon 97, 250 2007. 10 Completed Gochon, Kimpo 66, 726 2007. 04 Completed Apartment complex in Ilsan XI 20, 700 2010. 03 Completed Geomdan in Incheon. XI 89, 800 2010. 03 Completed Ilsan XI 638, 000 2009. 12 Completed 1 st Seongbuk XI GS Engineering & Construction Quantity(㎡) Human sia in Pangyo Hyundai Construction Name of Site 104, 770 2009. 09 Completed 2 nd Seongbuk XI 133, 890 2009. 10 Completed Choongmuro XI 21, 846 2009. 04 Completed Banpo XI 423, 984 2008. 05 Completed 122, 998 2008. 05 Completed Boutique Monaco, in Kangnam station 20, 360 2007. 12 Completed Kwangjang dong XI 18, 480 2007. 12 Completed The City 7 in Changwon XI DURIM CO. , LTD. 28

10. Track records Name of company Quantity(㎡) Delivery time Remarks The Shop Ha, Songdo, Incheon 83, 000 2009. 11 Completed The Shop sen, Songdo, Incheon 94, 600 2009. 11 Completed STARCITY, Kunkuk university 198, 000 2005. 07 Completed 1, 490 2004. 08 Completed 293, 597 2008. 06 Completed Naesondong, Euiwang 990 2006. 06 Completed Educational institute in Gyeongjoo POSCO Construction Name of Site 8, 020 2005. 10 Completed Noble and swing Condominium In Pyongchang 4, 650 2004. 09 Completed 460 2003. 10 Completed 5 th Leemun 3, 000 2003. 08 Completed Kisanri, Hwaseong city 6, 600 2003. 05 Completed Re-construction of far east in Seocho 13, 860 2002. 04 Completed Yongkangdong, Mapo 1, 320 2002. 04 Completed Haewoon dae, Busan Per ST Raemian, in Banpo Samsung Engineering &Construction 2 nd region of Gongduk, Mapo DURIM CO. , LTD. 29

10. Track records Name of company Quantity(㎡) Delivery time Remarks 240, 000 2009. 01 Completed 3, 000 2005. 05 Completed Samgye dong, Kimhae 30, 270 2004. 11 Completed We’ve, Geumgok, Boondang 27, 720 2003. 11 Completed Sky, samsandong, Ulsan 20, 000 2010. 1 Completed D-qube city, Shidorim 54, 000 2009. 11 Completed U-need, Daesung, Sadangdong 12, 000 2008. 10 Completed Eco-metro, Incheon 12 15, 000 2008. 11 Completed Eco-metro, Incheon 11 24, 000 2008. 10 Completed Lee an, Choongdong, Bucheon 27, 390 2007. 06 Completed 1 st quandum Myeongji, Busan 342, 076 2008. 07 Completed Quandum C, Myeongji, Busan 173, 400 2010. 06 Completed 13, 2007. 03 Completed Name of Site We’ve zenis in Daegu Doosan Construction Daesung Industrial Hanhwa Construction Daewoo Construction Poongdong, Ilsan Yongcho house Shinsegye Construction P&Paul Ruth, Cheongdam dong Shinchang Construction Villa, Cheongdamdong 3, 470 2007. 11 Completed Kolon Construction The Prou, Songdo city 30, 000 2009. 03 Completed DURIM CO. , LTD. 30

10. Track records Name of company Kyeonghee Noblesse, Chongam 11, 360 2007. 09 Completed Morning dong city, Woongsan, Yangsan 52, 955 2007. 09 Completed 80, 000 2008. 05 Completed 18, 150 2006. 03 Completed Masterpiece, Daejamdong, Pohang 42, 610 2004. 08 Completed Moving, Pohang 41, 950 2003. 11 Completed 29, 040 2006. 07 Completed Golden dong, Daegu 206, 980 2005. 09 Completed Banyeo dong, Daegu 34, 370 2004. 09 Completed Chimsandong, Daedu 34, 320 2004. 09 Completed Dowon dong, Daegu 89, 100 2004. 05 Completed Sooseong dong, Daegu Samgoo Construction Remarks Trinien, Daejam, Pohang Shinwon General Development Delivery time Trinien Gumi Daemyeong Construction Quantity(㎡) 19, 670 2004. 05 Completed 142, 230 2003. 11 Completed 6, 600 2006. 04 Completed Name of Site Daewoo Construction Benecity, Han River Lotte Construction Yongsan dong, Daegu Daegyo D&C Michelan Lake DURIM CO. , LTD. 31

10. Track records Name Of company Remarks 7, 590 2005. 09 Completed Maseok, Namyangjoo 47, 310 2005. 04 Completed Pyeongnae, Namyangjoo 44, 880 2003. 11 Completed 62, 700 2002. 12 Completed Padong, Daegu 16, 930 2003. 07 Completed President, Gumi 61, 710 2003. 08 Completed 156, 090 2003. 11 Completed Pyeongnae, Namyangjoo 25, 150 2004. 03 Completed Dreampark, Ahndong 37, 950 2004. 04 Completed Sangmo, Gumi 47, 520 2004. 04 Completed 177, 020 2005. 09 Completed We’ve, Geumgok, Boondang Hwaseong Industrial Delivery time Dongseo byeon, Daegu Shin myeong General Construction Quantity(㎡) 27, 720 2003. 10 Completed Sangyedong, Kimhae 30, 270 2004. 10 Completed 3, 000 2005. 05 Completed 86, 130 2003. 09 Completed Name of Site Hopyeong, Namyangjoo Grand, Chikgok, Daegu Golden dong, Daegu Doosan Construction Poongdong, Ilsan Daerim Industrial Sooseong, Daegu DURIM CO. , LTD. 32

10. Track records Name Of company Quantity(㎡) Delivery time Remarks Won dang, Incheon 31, 680 2003. 09 Completed Site in Kileumdong 51, 480 2003. 10 Completed Billate, Secho 17, 790 2003. 10 Completed Acrovista, Secho 90, 090 2004. 05 Completed Songdo, Incheon 22, 770 2004. 12 Completed Changpo, Pohang 4, 690 2004. 03 Completed Buldang, Cheonan 75, 900 2004. 04 Completed 2 nd Yangbulri 7, 580 2001. 07 Completed Twoi Gyeo Won 4, 040 2001. 08 Completed Poongdong, Ilsan 4, 310 2001. 08 Completed Geoje dong 6, 430 2001. 09 Completed Manchondong, Daegu 20, 930 2004. 09 Completed Shinwon General Development Morning City, Woongsan, Yangsan 52, 955 2007. 09 Completed Material Center, Pohang 14, 190 2004. 10 Completed Ssangyong Construction Dongsoo Won 12, 040 2001. 05 Completed Name of site Daerim Industrial Hyundai Industrial & Development Ssangyong Construction Choongang Construction DURIM CO. , LTD. 33