SPE PANEL LINING The next generation of Lining material Bokju Co., Ltd. ⓒ2017 Bokju Co., Ltd. All rights reserved. Bokju Co.,Ltd. Is an enterprise specializing in the development of Eco-friendly water tanks

CONTENS 1. COMPANY INSTRUCTION - Company Information - Business Field - Company front view - History 2. PRODUCT INTRODUCTION - The problems of existing products - Structure of SPE Panel - Advantages of SPE Panel - Comparison of water-proofing products - Structure of SPE Panel - Completed construction photo 3. BUSINESS PERFORMANCE - Contracts - Award career - Patents - Certification CONTENS

1. COMPANY INSTRUCTION Greeting Hello! Since established in 2009, Bokju has made all efforts to supply only clean, healthy and sustainable water tank and developed an eco-friendly and modern type of water tank, CW Panel Lining water tank and CW Panel-combined water reservoir. The CW Panel lining and CW Panel-combined water reservoir had been already designated as an excellent procurement item respectively to be widely acknowledged for their excellence and have obtained an honor of being selected as a supported enterprise to advance into the overseas procurement market. And we also were honored to win “Korea small and medium enterprise innovation grand-prize,” 2012. I think that serving clean water for next generation is my mission and promise to try to do it with my executives and staffs as one of the leading companies in water industry. Thank you. Taeyoung Cho

1. COMPANY INSTRUCTION Company Information Company Bokju Co., Ltd. Authorized Person Taeyoung Cho Businedd Field Supplying SPE Panel, Water tanks, Reservoir Address 37-10, Nonggong-gil, Namhu-myeon, Andon-si, Gyeongsangbuk-do, Rep of Korea Tel +82-53-955-9500 Fax +82-53-955-9560 Establishment 21st July 2009 Registered Capital 800,000,000(won) Employee 14

1. COMPANY INSTRUCTION Business Field 1. STS : Manufacturing and Installation “Cylindrical” & “Square water tank” 2. SPE LINING : Water tanks & Reservoir with concrete structure 3. FLOW ARRANGEMENT WALL (PDF WALL (STS,SPE)) : Installation with concrete water storage (Waterproof & Dustproof) 4. CHEMICAL TANKS(SPE) : Chemical tanks for various chemicals

1. COMPANY INSTRUCTION Company front view Factory in Andong 37-10, Nonggong-gil, Namhu-myeon, Andong-si, Gyeongsangbuk-do, 760-873 KOREA Head Office in Daegu 805, software Venture Tower, 117, Dongbuk-ro, Buk-gu, Daegu

1. COMPANY INSTRUCTION History 2017 2016 2015 2014 2013 2012 * Export to Vietnam (US$60,000) * Signed a contract with Singapore company (US$1,000,000) * Signed a contract with Thailand company * Signed a contract with India company (US$2,000,000) * Establish overseas branch in Thailand (Bankok) 2017 * Obtained certification of Technology-intensive Business (Innovation-Business, INNO-BIZ) * Signed a contract with Malaysia company (US$3,000,000) 2016 * Participated in the Economic Mission of China-Japan-South Korea Trilateral summit * Special award of Venture enterprise 2015 2014 * Increased factory equipment * Won the prize of Federation of the Korean industries (the day of commerce and industry of 41st ) * Minister of the Environment Award in Water management * Acquired a KC certificate (criteria of Hygiene and safety) 2013 2012 * Acquired a K mark certificate(A water storage tank of CW Panel lining * Selected an excellent procurement item (SPE Panel-combined water storage tank, lining Awarded “Korea small and medium enterprise innovation grand-prize”

1. COMPANY INSTRUCTION History 2011 2010 2009 * Established a R&D center * Acquired a Geon mark certificate (A water storage tank of CW Panel lining concrete) * Acquired a Q mark certificate (A cylindrical water tank with an internally and externally reinforced structure) 2011 2010 * Acquired an ISO9001 2009 * Established BOKJU CO., LTD.

2. PRODUCT INTRODUCTION The problems of existing products Stainless water tank - upper part corroded by chlorine gas, rust on welding part Peeled off painting part and Leaking water out of cemented structure Peeled off Epoxy coating on surface & Corrosion → Detection of Bisphenol-A

“SPE PANEL” 2. PRODUCT INTRODUCTION What is the SPE Panel? LDPE LDPE Contact surface of water LDPE Contact surface of water Stainless Attaching concreted structure Stainless Attaching concreted structure * SPE PANEL : LDPE sheet and stainless steel sheet are layered panel

2. PRODUCT INTRODUCTION Structure of SPE Panel LDPE LDPE Stainless Why use SPE panels? SPE Panel : LDPE sheet and stainless steel sheet are layered panel. SPE panel attached to a concrete or cement reservoir and water tank. So, the surface of the LDPE sheet touches the water, and the stainless steel sheet surface touches the concrete. -> Therefore, SPE panel has all the advantages of LDPE and Stainless. - LDPE Sheet’s advantage : Hygienic, non-corrosive, semi-permanent STS 304 (stainless steel)’s advantage : Durable, semi-permanent LDPE Contact surface of water LDPE Stainless Attaching concreted structure Stainless

Economical efficiency 2. PRODUCT INTRODUCTION Advantages of SPE Panel SPE PANEL Hygiene Economical efficiency Durability - Economic effect by minimizing the cost of maintenance and repair Harmless, non-toxic, odorless Clean water tank without the release of environmental hormones and heavy metals - No corrosion and semi-permanent use - Defects occurrence is less

1 2 3 4 5 6 2. PRODUCT INTRODUCTION Advantages of SPE Panel SPE PANEL * Excellent Both sides Compression and Impact strength semi-permanent lifespan 2 * Double waterproof structure to maintain waterproofing as STS is substitute for damaged PE sheet of surface 3 * Strong corrosion resistance to chemical like chlorine * No harmful substance and Great hygiene(PE Sheet) 4 * Easy maintenance and Low repair costs 5 * No Product damage from External Factors of rusty pipe and temperature changes 6 * Various applicable panel – The concrete reservoir, Chemical tanks, Sewage tanks

Adhesion method or Film type 2. PRODUCT INTRODUCTION Adhesion method or Film type Comparison of water-proofing products Double water proofing - Even when PE layer is damaged, STS plays a role of water-proofing No interference structure condition (ex: Crack) No transferal corrosion from foreign substances in pipeline Partial repair is easiest and cost is lowest - Simply banding a PE to repairing area - 20% down less than the previous Construction 100% Perfect waterproofing - Because it is scientifically tested(spark test) during construction, Defects are found before filling with water SPE Panel Lining Other materials Because depend on visual inspection, Defects are found after filling with water Fixing SPE Panel by using anchors on concreted structure Partial repair impossible and high cost Epoxy, PE sheet, Tile type : Leakage test and reinforcement work is difficult STS : Acid cleaning costs When Simple repair, water cut-off necessary SPE Panel Lining 100% Perfect waterproofing - Because it is scientifically tested(spark test) during construction, Defects are found before filling with water Construction Fixing SPE Panel by using anchors on concreted structure Film type or simple adhesion method Partial repair is easiest and cost is lowest - Simply banding a PE to repairing area - 20% down less than the previous No water cut-off - When regular cleaning, it can be repaired No water cut-off - When regular cleaning, it can be repaired Maintenance Maintenance No interference structure condition (ex: Crack) No transferal corrosion from foreign substances in pipeline Film and tile type : loss of waterproof function STS : Corrosion occurrence of reservoir back side and transferal corrosion Double water proofing - Even when PE layer is damaged, STS plays a role of water-proofing Adhesion method or Film type

2. PRODUCT INTRODUCTION Comparison of water-proofing products Durability Hygiene Economic Feasibility The Lowest Life Cycle Cost - Installation easiness, Durability, Maintenance, Reuse (More than 60% savings compared to Epoxy) Semi-permanent material life (40~50 years) - STS,PE durability → more 50 years It is not affected by chlorine SPE Panel Lining Other materials STS type – It is most vulnerable to chlorine Epoxy type → 3 ~ 5 years STS type → 10 ~ 20 years (Chlorine, back side corrosion) Tile type → 5 ~ 10 years Hygienic and environmentally-friendly materials Reuse possible, No corrosion, Hazardous substances are not eluted Epoxy type → Environmental hormone (Bisphenol A) FRP type → Glass fiber elution, waste disposal STS type → Heavy metal elution Because Insufficient durability and maintainability, Life Cycle cost is Increase (At least two to three times of SPE panel)

2. PRODUCT INTRODUCTION Complete! Structure of SPE Panel Sticking SPE Panels Perform an anchoring bolts for fixing Welding Panels Complete! Completion Spark test (Finding leakage) Welding PE Band

2. PRODUCT INTRODUCTION Completed construction photo The Province of Gyeongsangbuk-do (20,000 ton) Yullang reservoir, Cheongju (12,000 ton) Technopolis, Daegu (5,800 ton) Anmak reservoir Andong (5,000ton) Manchon reservoir, Daegu (5,000ton) Okdong water reservoir, Andong (15,000 ton)

2. PRODUCT INTRODUCTION Completed construction photo Airport reservoir, Jeju Island (3,000 ton) Peace reservoir, Daegu (2,000 ton) Constitutional Court, Seoul (400 ton) Dodong water reservoir, Island Ulleung (5,000 ton)

3. BUSINESS PERFORMANCE Contracts Export contract & MOU Ceremony (USD 3 millions with Malaysia Company) Contracts Export contract & MOU Ceremony (USD 3 millions with Malaysia Company) Water storage tanks Contract Ceremony (with China Company) Export contract & MOU Ceremony (USD 2 millions with India Company) Export contract & MOU Ceremony (USD 1 millions with Singapore Company)

3. BUSINESS PERFORMANCE Exhibition Export contract & MOU Ceremony (USD 3 millions with Malaysia Company) Exhibition 2012 Water Exhibition in Vietnam 2015 Entech Hanoi Exhibition in Vietnam 2016 Water Exhibition in Vietnam

3. BUSINESS PERFORMANCE Exhibition Export contract & MOU Ceremony (USD 3 millions with Malaysia Company) Exhibition 2017 Water Exhibition in Thailand 2017 Best product Exhibition in Vietnam

Technology- Innovation Grand Prize, 2012 3. BUSINESS PERFORMANCE Award career Technology- Innovation Grand Prize, 2012 2012 Won the Green Technology for Water Management Prize given by the President of the Korea Environmental Industry and Technology Institute 2014 Won the President of the Federation of Korean Industries Award for outstanding business in celebration of the 41st Commerce and Industry Day 2015 Won the “Korea Federation of Small and Medium-sized Enterprises Awards 2015 Won the “Outstanding Venture Business Awards” given by the Daegu Regional Public Procurement Service 2016 Won the “Small and Medium Enterprises (SMEs) Minister”

3. BUSINESS PERFORMANCE Patents

3. BUSINESS PERFORMANCE Certification

THANK YOU! CONTACT PERSON Laura Kim Overseas Sales Manager DIRECT TEL+82-70-4700-8186 TEL +82-53-955-9500 FAX +82-53-955-9560 EMAIL bj9559500@daum.net ⓒ2017 Bokju Co., Ltd. All rights reserved. Bokju Co.,Ltd. Is an enterprise specializing in the development of Eco-friendly water tanks.