[ OOP Zavod MDF, Russia TU 5536-001-67790632-13 ~ 1

ZAVOD MDF Limited Liability Company

OKP 55 3600

Agreed by:(signature) V.V. Sosnin Deputy Executive Director OOO Zavod MDF ___April 2014

C ___ ь .

Approved by:(signature) A.A. Khudyakov Executive Director OOO Zavod MDF

_ April 2014

DRY-PROCESS BOARD (MDF)SPECIFICATION

TU 5536-001-67790632-13 2nd Edition

Effective date: 1 May 2014

Developed by:

(signature) P.D. Petroshenko Chief Process Engineer 29 April 2014

(signature) V.N. Skobelev Deputy CTO 29 April 2014

(signature) I.E. Malysheva Head of QC Department 29 April 2014

| Khanty-Mansi Autonomous District, Mortka, tel. +7(34677) 30144, fax 30925. e-mail: info@zmdf.ru. www.smdf.ru Sheet 1 of 1У ]

This Specification has been developed in accordance with the requirements of EN 622-5 prepared by Technical Committee CEN/TC 112 in June 1997.

The 1st Edition of this TU 5536-001-67790632-13 Spec includes modifications and amendments relating to board quality indices and applications with due account for the European Standard requirements.

Introduction of the 1st Edition of this TU 5536-001-67790632-13 Spec supersedes and voids the 2nd Edition of TU 5536-001-55438410-05 Spec and all modifications and supplements thereto.

GeneralThis Specification applies to fibreboard manufactured by dry-process batch pressing method, thus forming a homogenous structure for MDF and LDF. Fibreboard is intended for further processing and usage in furniture, construction products and other moisture-proof products. The board is designed for non load-bearing conditions and shall be used in dry rooms at average temperature of 20°C and air humidity of up to 65%. Acceptable methods of processing and allowable applications are stipulated by density class and board grade.

The application of board for specific products shall be specified by agreement with the sanitary and epidemiological supervision authorities.

This Specification shall not apply to faced or painted board.

The board code designation shall consist of board grade, quality level, emission class, dimensions in mm, and the designation of this Specification, i.e. TU 5536-001-67790632-13.

Example of board code designation for ordering:

DVP NP -A.2.E1,2440x1820 x8,0; TU5536-001-67790632-13 DVPSP-A.1.E1, 2440 x 1830 x 16,0; TU 5536-001-67790632-13 DVP VP-A.2.E1, 2440 x 1830 x8,0; TU5536-001-67790632-13

where:

DVP NP = LDF, light density fibreboard DVP SP = MDF, medium density fibreboard DVP VP = HDF, high density fibreboard A = grade A1,2, 3 = quality level 1, 2 or 3, specifies the surface quality after sanding

El, El = emission class2440 x 1830 x 16,0 = board dimensions in millimetres TU 5536-001-67790632-13 = designation o f this Specification

1. Technical RequirementsDry-process fibreboard (hereinafter, "the board") shall comply with this Specification's requirements.

OOP Zavod MDF, Russia TU 5536-001-67790632-13 |

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1.1 The board is classified by:

■ three density classes:- MDF, medium density fibreboard;- LDF, light density fibreboard;- HDF, high density fibreboard;

■ physical and mechanical properties, grades A and В

■ surface condition, quality levels 1,2 and 3

■ formaldehyde content, emission classes El and E2.

1.2 The board dimensions shall be in accordance with those specified in Table 1.

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Table 1Dimension Value, mm Tolerance, mm

Length 3660, 2440, 2200,2150 ±5Width 1830,1220 ±5Thickness 8.0; 9.0; 10.0; 12.0; 14.0; 16.0;

18.0; 20.0; 22.0; 24.0; 26.0; 28.0; 30.0

±0.3

Note: By agreement with the customer, board of other dimensions may be produced.

1.3 The edge out-of-straightness shall not exceed 1.5 mm per 1000 mm of board edge length.

1.4 The edge out-of-squareness shall not exceed 2 mm per 1000 mm of edge length.

The edge out-of-squareness may be determined by the difference between the board face diagonals that shall not exceed 0.2% of board length.

1.5 Board classification by density class and board physical and mechanical properties for various board grades shall be in accordance with the standard values shown in Table 2.

1.6 The board shall be manufactured using synthetic resins and chemicals authorised for use by the sanitary and epidemiological supervision authorities.

1.7 Formaldehyde content shall not exceed: for the board of emission class El, 8 mg per 100 g of perfectly dry board; for the board of emission class E2, 30 mg per 100 g of perfectly dry board.

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Table 2

Board grade Nominal thickness, mm6 to 8 9 to 12 13 to 19 20 to 30

Average density, kg/m3, with rated tolerance of ± 7%LDF-A 620-665-705 605-640-682 585-630-671 578-620-662

-B 620-665-705 605-640-682 585-630-671 578-620-662MDF-A 707-760-815 689-740-793 672-730-772 656-710-762

-B 707-760-815 689-740-793 662-730-762 656-710-762HDF-A 795-855-915 751-810-864 717-770-815 682-740-792

-B 795-855-915 751-810-864 717-770-815 682-740-792Static bend strength, MPa, min

LDF-A 22 21 19 17-B 21 20 18 16

MDF-A 23 22 20 18-B 22 21 19 17

HDF -A 22 23 21 19-B 24 22 20 18

Cross-face tensile strength, MPa, minLDF-A 0,45 0,35 0,4 0,3

-B 0,35 0,3 0,35 0,25MDF-A 0,65 0,6 0,6 0,55

-B 0,5 0,4 0,4 0,35HDF -A 0,9 0,7 0,6 0,6

-B 0,65 0,5 0,35 0,4Swelling bj/ thickness per 24 h, %, max

LDF-A 22 20 18 18-B 25 22 20 20

MDF-A 17 15 12 10-B 20 18 15 13

HDF -A 10 10 8 8-B 13 13 11 11

i’or all board grades moisture content shall be 3% to 9%

1.8 For sanded board, the surface condition shall be in accordance with the requirements given in Table 3.

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Table 3Im p e r fe c t io n s R e q u ir e m e n ts

Q u a lity lev e l 1 Q u a lity lev e l 2 Q u a lity lev e l 3Face p its/bulges N o t allow ed N o m ore that 2 im perfections,

each < 0.3 mm deep/h igh and < 20.0 m m in d iam eter, per 1 m 2 o f board surface

N o m ore that 3 im perfections, each < 0.5 m m deep/high and < 20 .0 m m in d iam eter, per 1 m 2 o f board surface

Scratches N o t a llow ed N o m ore than 2 im perfections, each < 200 m m long, per 1 m 2 o f board surface

N o m ore than 2 im perfections, each < 300 m m long, per 1 m 2 o f board surface

W ax/oil stains N ot a llow ed N o m ore than 2 im perfections, total area < 100 m m 2, per 1 m 2 o f board surface

N o m ore than 2 im perfections, to tal area < 300 m m 2, per 1 m 2 o f board surface

D ust-resin spots N o t a llow ed T otal area o f im perfections < 2% o f board area

T otal area o f im perfections < 10% o f board area

D elam ination / b lis ter N o t a llow ed N ot allow ed < 5% o f board w idthE dge/com er sp lin tering W ithin the

length and w idth to le rances

W ithin 15 m m from co m er W ithin 25 m m from com er

Foreign inclusions N o t allow ed N ot specified N o t specifiedSanding flaw s N o t allow ed 10% o f face area, m ax 30% o f face area, maxEdge cracks N o t allow ed D epth < 15 mm D epth < 25 m m , including

honeycom bsQ uaggy edge N o t a llow ed < 15 m m , in case o f chang ing

board d im ensions< 25 m m , in case o f changing b oard d im ensions

2. Marking and Packing

2.1 Marking shall be in accordance with the requirements of GOST R 51121-97. Each package of board shall be tagged; the tag shall contain the following information:

- manufacturer's address;- manufacturer's name and/or trademark;- product description;- board grade;- board quality level;- dimensions, mm;- emission class;- boards per package, pieces and mm2;- date of manufacture;- shift;- designation of this Specification.

2.2 The side edge of each board shall be dark-ink stencilled, within 100 to 150 mm from the comer, with the marking containing the following information:

- manufacturer's name and/or trademark;- board grade;- quality level;

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- emission class;- date of manufacture.

Notes:1) All boards in the package, regardless of the board thickness, shall be marked.2) Shipment marking shall be in accordance with GOST 14192.

Boards shall be packaged in shipment stacks. A stack shall contain boards of the same dimensions, grade and emission class.

The stack height shall be selected taking into account the capabilities of hoisting equipment and load-carrying capacity of vehicles, however, in any case, the stack height and weight shall not exceed 1000 mm and 5000 kg, respectively.

Boards shall be stacked by palletless method. Corrugated board sheets shall be used as furniture material, to protect the boards from environmental exposure. Dimensions of the upper and lower liners shall be not less than those of stacked boards.

The stack shall be strapped with packing tape using protective angles that shall be installed at two points by width and at three points by length of the stack.

On written agreement with the customer, other method of packing may be used.

3. Safety Requirements3.1 For manufacture of board, the safety requirements shall be in accordance with the "Occupational Safety Rules for Logging and Woodworking Industry and for Forestry Operations" and OST 13-85-80.

3.2 For emitted chemicals, the maximum occupational exposure limit shall not exceed the values specified in GOST 12.1.005-88.

4. Acceptance Procedure

4.1 The boards shall be accepted by test units. The test unit shall consist of boards having the same grade, dimensions, emission class, manufactured under the same process conditions during the same shift, and certified by the same quality document.

4.2 To assess the board quality, acceptance inspection and periodical inspection are used. Each property specified herein is tested.

4.3 Sampling shall be made by systematic method according to GOST 18321-73. For visual inspection, 15 boards shall be sampled from the batch, including 5 boards for dimensional inspection, straightness and edge squareness testing. For testing physical and mechanical properties, at least two boards shall be sampled from the batch.

Determination of physical and mechanical properties may be made on board specimens taken for dimensional inspection. For moisture content control, one board shall be sampled. The moisture content may be determined on one of the boards intended for testing physical and mechanical properties. Moisture content control frequency shall be once every г day.

| Khanty-Mansi Autonomous District, Mortka, tel. +7(34677) 30144, fax 30925. e-mail: info@2mdf.ru. www.smdf.ru Sheet 6 of 13

4.4 Formaldehyde content shall be determined by periodical inspection at least monthly, and whenever the processing conditions are changed.

4.5 The unit shall be accepted, if each test board conforms to the requirements of this Specification by each characteristic. The unit of boards that fails to comply with the surface condition

requirements, dimensional requirements, straightness and edge squareness requirements, may be re­graded and re-submitted for inspection.

4.6 Board shall be accounted in pieces, in square metres to the nearest 0.01 m2, and in cubic metres to the nearest 0.001m3.

4.7 The unit of boards shall be accompanied with a quality-certifying document stating the following:

- manufacturer's name and/or trademark;- manufacturer's address;- board code designation;- date of manufacture;- board test results in accordance with Table 2;- statement of conformity to the quality requirements set forth in this Specification;- board dimensions;- boards per unit in pieces, in square metres to the nearest 0.01 m2, and in cubic metres to the

nearest 0.001m3.- QC stamp.

For boards intended for export supplies, the accompanying documents shall be executed in accordance with the agreement with a foreign trade entity or company.

4.8 Physical and mechanical test results shall apply to the entire unit of boards manufactured in accordance with the specifications, regardless of the board quality level.

5. Inspection and Testing

5.1 General rules for physical and mechanical testing and specimen preparation shall be in accordance with GOST 10633-78, without conditioning, provided the board moisture content is within (8 ± 3) %.

5.2 Methods for dimensional testing, straightness and edge squareness testing shall be in accordance with GOST 27680-88 (without 24-hour conditioning).

Edge straightness shall be tested using the fixture as per GOST 27680-88 or a straightedge as per GOST 8026-92, 1000 mm long, accuracy class 2 or better, and a set of feeler gauges as per TU 2- 034-225-87 Spec.

Edge squareness shall be tested using the fixture as per GOST 27680-88 or a metal measuring tape graduated in 1 mm as per GOST 7502-98 for measuring board face diagonal length.

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5.3 Methods for determination of density, moisture content and swelling by thickness shall be in accordance with GOST 10634-88.

5.4 Method for determination of cross-face tensile strength shall be in accordance with GOST 10636-90.

5.5 Method for determination of static bend strength and elasticity modulus shall be in accordance with GOST 10635-88.

5.6 Specific resistance to outer layer normal pull-off shall be determined in accordance with GOST 23234-78.

5.7 Specific resistance to screw withdrawal shall be determined in accordance with GOST 10637- 78.

5.8 Warping shall be determined in accordance with GOST 24053-80.

5.9 Surface roughness shall be determined in accordance with GOST 15612-85 using a roughness gauge 1.5 mm in radius, or using duly approved reference standards.

5.10 Formaldehyde content shall be determined by perforator method in accordance with GOST 29678-88.

5.11 Board surface condition shall be visually inspected in accordance with 1.8 hereof.

5.12 Stain/spot types and sanding flaws shall be determined by comparison with duly approved reference standards. The total spotted/stained area shall be determined as a sum of individual stain/spot areas.

To determine the stain area to the nearest 1 cm , a measuring grid with square cells of 10 mm side applied to transparent sheet material shall be used. Accuracy of marking the grid lines shall be ±0.5 mm. When counting the cells covered by a stain, the cells covered less than by a half shall not be considered.

5.13 Pit depth and bulge height shall be determined using a dial gauge type ICh-10 as per GOST 577-68 secured in a metal U-clamp with cylindrical bearing surfaces having a radius of (5 ± 1 mm) and span of 60 to 80 mm.

Dial gauge zeroing shall be done by setting the dial on a straightedge as per GOST 8026-92 or a surface plate as per GOST 10905-86. The travel of the gauge rod on either side of the bearing surface shall be 2 mm, minimum.

5.14 Linear dimensions of bark inclusions, edge splintering, comer crumbling, and scratch length shall be determined using a metal ruler as per GOST 427-75.

6. Transportation and Storage

6.1 Boards shall be shipped by any means of transportation in accordance with the shipping rules applicable to the respective transportation mode and the RF Railways Ministry specifications for cargo loading and fastening; protection against atmospheric precipitation and mechanical damage is the requirement.

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6.2 Shipment marking shall be in accordance with GOST 14192-96.

6.3 Boards shall be stored indoors at relative air humidity not greater than 65% and equilibrium moisture content not greater than 19%.

6.4 Boards shall be stored in stacks, no more than 600 mm thick each. The stacks shall be laid on even pallets or rectangular wooden blocks having the width of not less than 80 mm, thickness not less than 60 mm and length not less than the board width. The difference in the thickness of blocks within a stack shall not exceed 5 mm. The blocks shall be laid across the board and spaced by 600 mm, maximum. The outer blocks shall be within 200 cm from the board-sawn ends.

6.5 The stacks of board shall be laid in piles of height not greater than 4.5 m. The blocks separating the stacks shall be located in the same vertical planes.

Lower blocks and pallets shall be laid on even surface.

7. Service Instructions7.1 To prevent the boards from absorbing toxic gases and to preclude further emission of such gases from the board-based products, the board-based products shall be protected by coating.

7.2 Fibreboard-based products shall be used at relative air humidity not greater than 65% and equilibrium moisture content not greater than 19%.

7.3 The usage of fibreboard is regulated in accordance with the quality indices by board class and grade, as well as by surface condition by quality level.

LDF, MDF and HDF shall be used for the following types of further processing:

- lamination;- painting;- postforming;- softforming;- fabrication of furniture;- manufacture of shaped pieces (running trim, front pieces);- manufacture of frame mouldings;- manufacture of flooring.

7.4 LDF is intended for use as a substitute for wood particleboard (WPB). According to international standardisation, LDF is regarded as homogenous wallboard (HWB). LDF features enhanced strength properties against WPB.

8. Manufacturer's Warranty

8.1 The manufacturer warrants that the board complies with the requirements set forth in this Specification provided the customer observes the provisions relating to usage, transportation and storage.

The warranty period is one year after manufacture of board.

OOP Zavod MDF, Russia______________________________________________________________________ TU 5536-001-67790632-13

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Appendix A(informative)

Physical and Mechanical Properties of Board

Property Value by grade Test methodA В

Specific resistance to screw withdrawal from face, N/mm, min, for thickness, mm:6.0 to 9.0> 10.0 to 12.0 - -

> 13.0 to 19.0 60 55 GOST 10637-78> 20.0 to 30.0 55 50Specific resistance to screw withdrawal from edge, N/mm, min, for thickness, mm:6.0 to 9.0> 10.0 to 12.0 — —

> 13.0 to 19.0 45 40 GOST 10637-78> 20.0 to 30.0 40 35Warping, mm per 1 running metre, max 1.2 1.6 GOST 24053-80Specific resistance to outer layer pull-off, MPa, min, for: LDF 0.5 0.4MDF 0.9 0.8 GOST 23234-78HDF 1.0 0.9

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| ООО Zavod MDF, Russia TU 5536-001 -67790632-13~~]

Appendix В

GOST 12.1.005.88

GOST 427-75 GOST 3560-75 GOST 7502-98 GOST 8026-92 GOST 14192-96 GOST 18321-73

GOST 577-68 GOST 10633-78

GOST 10634-88 GOST 10635-88

GOST 10636-90 GOST 10637-78

GOST 10905-86 GOST 15612-85

GOST 23234-78

GOST 24053-80

GOST 27678-88

GOST 27680-88 OST 13-40-89 TU 2-034-225-87

Normative References

Occupational Safety Standards System. General sanitary requirements for working zone airMeasuring metal rules. Basic parameters and dimensions. SpecificationsPackage steel strip. SpecificationsMeasuring metal tapes. SpecificationsLevelling rules. SpecificationsMarking of cargoesStatistical quality control. Random sampling methods for single-piece productsDial indicators graduated in unit divisions of 0,01 mm. SpecificationsWood particle boards. General requirements for testing physical and mechanical propertiesWood particle boards. Methods for determination of physical propertiesWood particle boards. Test methods for ultimate strength and modulus of elasticity in bendingWood particle boards. Test method for cross-face tensile strengthWood particle boards. Test method for specific resistance to nail and screw withdrawalSurface plates and face-plates. SpecificationsProducts of wood and wooden materials. Methods for determination of surface roughness parametersWood particle boards. Test method for specific resistance to outer layer normal pull-offWood particle boards. Details for furniture. Method for determination of warpingWood particle boards. Perforator method for determination of formaldehyde contentParticle and fibre boards. Methods for shape and dimensional controlPlastic angleFeelers

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OOP Zavod MDF, Russia TU 5536-001-67790632-13 1

Amendment Record SheetD escrip tion Sheet

N oT otal sheets in docum ent

D ocum entdesignation

A ccom pany ing docum ent receip t ref. N o

S ignature Date

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Attachment No 1 of 01/09/2014

Im p e r fe c tio n sQ u a lity L e v e l 4 , sa n d ed Q u a lity L ev e l 4 , n o t sa n d ed Q u a lity L ev e l 5 ,

p a c k in g b o a rdFace p its/bulges N o m ore tha t 1.5 m m deep N ot specified N o t specifiedScratches N o m ore than 2 im perfections,

each < 200 m m long, per 1 m 2 o f bo ard surface

N ot specified N ot specified

W ax/oil stains A llow ed A llow ed A llow edD ust-resin spots A llow ed N ot specified N ot specifiedD elam ination / b lis ter A llow ed , no m ore than half-

length at each sideA llow ed, w ith in tegrity m ain ta ined A llow ed, up to

separation o f facesE dge/corner sp lin tering A llow ed at all sides A llow ed at all sides A llow ed at all sidesForeign inclusions N o m ore than 4 im perfections on

v isib le su rfaceN ot specified N o t specified

Sanding flaw s A llow ed N ot specified N o t specifiedEdge cracks N o t specified N ot specified N o t specifiedQ uaggy edge N o t specified N ot specified N ot specifiedSuggested application C overing boards, collision w alls,

covering m ateria l, subfloor, consum er jo in e ry p roducts

C ollision w alls, covering m ateria l, package base sheet, m echanica l dam age pro tec tion palle t

M echanical dam age pro tection pallet

Supplement to determination of board quality level

Physical and mechanical characteristics for board QL 4 and QL 5 shall be specified by visual inspection with no lab testing required. Provisions for integrity and packaging properties shall be determined individually with each individual customer.

Seal: Zavod MDF Limited Liability CompanyMain State Registration No 1108606000513 MortkaKhanty-Mansi Autonomous District Russian Federation

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