CN1440904A - Self-installed suction anchor - Google Patents
Self-installed suction anchor Download PDFInfo
- Publication number
- CN1440904A CN1440904A CN 01143244 CN01143244A CN1440904A CN 1440904 A CN1440904 A CN 1440904A CN 01143244 CN01143244 CN 01143244 CN 01143244 A CN01143244 A CN 01143244A CN 1440904 A CN1440904 A CN 1440904A
- Authority
- CN
- China
- Prior art keywords
- anchor
- suction
- overhead bin
- stake
- cabin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000013535 sea water Substances 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 13
- 238000002347 injection Methods 0.000 abstract description 8
- 239000007924 injection Substances 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 5
- 230000035515 penetration Effects 0.000 abstract 1
- 230000006837 decompression Effects 0.000 description 6
- 230000005484 gravity Effects 0.000 description 5
- 239000007921 spray Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 2
- 230000001914 calming effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 108010066278 cabin-4 Proteins 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
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Abstract
The self-installed suction anchor consists of anchor cylinder, anchor top and upright on the anchor top. It features that the sealed top cabin on the anchor cylinder can provide the suction anchor with buoyancy when it is empty and may be sunk smoothly via controlled water injection. By means of water drainage and air exhaust to the cabin, pressure difference in the upper part and the low part of the anchor is formed to realize suction penetration. These pneumatic operation processes are completed via the air inlet and outlet pipeline in the top board of the top cabin and connected to air compressor, short pipes connecting the inside of the top cabin and sea water, and valves in the control bench in the working boat. The suction anchor with top cabin is superior to traditional suction anchor without top cabin in that in can realize the self installation without using floating crane and thus low marine engineering cost.
Description
The invention belongs to the innovation of ocean engineering field suction anchor (stake) structural shape and field engineering.
The mounting means of existing suction anchor (stake) has water operation and gas to operate two kinds.The two all can realize seabed injection operation.Gas is operated can also realize self-floating towing by inflation in the anchor tube, and this process can not rely on marine crane ship, thereby saves certain erected cost.But gas filed anchor tube press to strengthen in the inflation from the water surface can run into, tube cumulative because of the depth of water to the free sinking process in seabed in, smaller volume, thereby buoyancy reduces rapidly, causes anchor body weight power and buoyancy lack of equilibrium, the unstable state of appearance acceleration sinking.Have to by crane ship again in the case.Therefore the mounting means of suction anchor (stake) in the past can partly be realized from installation, and can not realize not relying on completely the complete in installing of overweight ship.
The objective of the invention is to by improvement, realize installing certainly, and do not rely on crane ship, thereby significantly save the marine engineering expense from self-floating towing, free sinking to the overall process of suction injection to traditional anchor body structure.
Technical scheme of the present invention:
A kind of self-installed suction anchor (stake), form by anchor tube, anchor top and upright on the anchor top, the top that it is characterized in that said anchor tube has a sealing overhead bin that is made of top board, base plate and sidewall, this sealing overhead bin can be done and one with the anchor tube, promptly below anchor tube top board, add a base plate, constitute the integral type overhead bin; Also can constitute a split type overhead bin by top board, base plate, sidewall separately and be loaded on the anchor top.Be equipped with the inlet and outlet pipeline that links to each other with Air compressor on the top board of the overhead bin of two kinds of patterns; Be equipped with on the base plate with anchor in communicate advance, drain stub; Be equipped with advancing of communicating with seawater, drain stub on sidewall bottom or the base plate; The inlet and outlet pipeline with advance, drain stub all has valve.The control desk and the Air compressor of valve all are located on the water-surface working boat.Based on this cover technique device, just can realize the installation fully certainly of said suction anchor (stake) by the operation of control desk on the surface ship.
Its principle is: the design of (1) sealing overhead bin guarantees the gravity of its buoyancy greater than anchor body (stake), thereby realizes self-floating towing under empty-cabin state.(2) to objective, open maritime valve, seawater is introduced overhead bin, controlledly slowly increase ballast, the anchor body is steadily sunk in water.(3) when the anchor end touches the seabed, overhead bin water is full of gradually forms additional gravity, overcome the table soil resistance and make the anchor end insert the seabed certain depth, keep stable and form anchor end initial sealing condition.(4) open the admission line valve and calm the anger in overhead bin, the sea is gone in the water emptying, control overhead bin buoyancy closes heavily less than anchor and overhead bin, closes maritime valve then.(5) open the exhaust line valve,, reduce to bar pressure, open the base plate valve simultaneously, allow that water body is gone into the cabin under the plate the overhead bin exhaust decompression.This is an anchor body suction sinking process, and its effective negative buoyancy is equivalent to the pressure that anchor pushes up above head from the upper and lower pressure reduction of anchor top board.The anchor body in this step sinks till overhead bin is filled to the top, and its submergence depth increases to the overhead bin height.(6) repeating step (4), (5) are finished the second step suction sinking to overhead bin calm the anger draining, draining decompression again, until with the whole injection of anchor tube seabed.Anchor tube overhead bin role is that 1. empty cabin provides buoyancy in overall process, realizes self-floating towing.2. water-filling provides additional gravity, realizes sinking in the stabilize water.3. after the draining, exhaust decompression again, it is poor to form the anchor roof pressure, realizes the suction injection.The anchor overhead bin of this moment becomes " suction pump " in anchor chamber in fact.
Preceence of the present invention is: this pattern suction anchor (stake) can not rely on crane ship and realizes self-floating towing, stablizes the overall process of sinking and sea floor suction injection in the water and installs certainly, thereby significantly save the marine engineering expense.
Be described further below in conjunction with drawings and Examples: for the suction anchor with split type overhead bin (stake), overhead bin is fixed on the anchor top, installs and overhead bin can be unloaded at the anchor body at available jig before the towage.For the suction anchor with integral type overhead bin (stake), if desire finally sinks to the anchor top below the mud face of seabed, reservation connects hand-hole up and down to overhead bin in suggestion, so that sinker later stage servant implements the clear basic operation of spray qi of chong channel ascending adversely act spoil disposal in the anchor.The following drawings embodiment provides at the installation with integral type overhead bin suction anchor (stake).
Fig. 1: be the related gas operation of the present invention self-installed suction anchor (stake) technical equipment scheme drawing.Wherein: 1-
The anchor tube; 2-anchor tube overhead bin; 3-top board; 4-base plate; 5-pile; 6-inlet and outlet pipeline; 7-
Advance, drain stub (maritime); 8-advance, drain stub (logical anchor in); 9-hand-hole (spoil disposal is used);
10,11,12-operated pneumatic valve; 13,14,15-pneumatic pipeline; 16-air compressor; 17-control
The system platform; 18-water-surface working boat.Fig. 2: for the gas of suction anchor of the present invention (stake) is operated from the installation process scheme drawing.Fig. 2-1: anchor head space cabin, self-floating towing process.Fig. 2-2: overhead bin water-filling, gravity sinking process.Fig. 2-3: the draining of calming the anger, overhead bin evacuation procedure.Fig. 2-4: overhead bin decompression, suction sinking process.Fig. 2-5: hand-hole spoil disposal process is dashed in the substrate spray.Fig. 2-6: suction injection, final process in place.
Embodiment:
A kind of technical equipment (referring to Fig. 1) with self-installed suction anchor (stake) of overhead bin comprises anchor tube 1, overhead bin 2, column 5; Be located at the inlet and outlet pipeline 6 on the overhead bin top board 3; Be located at bottom board of top cabin 4 and be communicated with advancing in the anchors, drain stub 8; Be located at the maritime short tube 7 on the overhead bin sidewall, and the hand-hole 9 that runs through overhead bin top board 3-5 base plate 4.Inlet and outlet pipeline 6 links to each other with air compressor 16 on the repair ship 18, by valve 12 controls; Advance, drain stub 7 and 8 is respectively by valve 10,11 control, each valve has pneumatic pipeline 13,14,15 to be connected to control desk 17 on the repair ship respectively.Based on this covering device,, can realize the installation certainly of suction anchor by procedure operation.
Concrete steps are: 1. under anchor tube overhead bin emptying state, realize self-floating towing, condition is the gravity that buoyancy that overhead bin 2 provides is enough to balance anchoring pile structure, shown in Fig. 2-1; 2. to place in place, open the maritime short tube 7 on the overhead bin sidewall, seawater is charged into overhead bin, realization anchor body is stablized sinking, inserts the seabed until the anchor end and reaches the initial sealing desired depth, shown in Fig. 2-2; 3. open the valve 12 of the inlet and outlet pipeline 6 on the overhead bin top board 3, calmed the anger to overhead bin 2 by Air compressor 16, through short tube 7 emptyings, this moment, the anchor end had the constraint of base soil to keep motionless with the water in the cabin, and control overhead bin buoyancy is no more than anchor and overhead bin closes heavily, shown in Fig. 2-3; 4. valve-off 10, open valve 11, and operated valve 15 again, and to overhead bin 2 exhaust decompressions, to bar pressure, it is poor to form the anchor roof pressure, realizes the suction sinking.It descends water body to go into the cabin through short tube 8 along with bottom board of top cabin descends, and till being full of, this step anchor body submergence depth just is the overhead bin height, shown in Fig. 2-4; 5. treat that bottom board of top cabin reduces to apart from about the mud face 2m, the diver is entered by hand-hole 9 and in the anchor spray qi of chong channel ascending adversely is implemented in substrate and lifted clear basic operation.The native mud of base is discharged through manhole by flexible pipe, reaches desired depth until clear base, shown in Fig. 2-5; 6. repeating step 3., 4. again to overhead bin the draining of calming the anger expand exhaust decompression, implement the suction injection until the final position, shown in Fig. 2-6.
Claims (4)
1. a self-installed suction anchor (stake) is made up of anchor tube, anchor top and upright on the anchor top, it is characterized in that the top of said anchor tube has a sealing overhead bin that is made of top board, base plate and barrel.
2. according to the suction anchor (stake) of claim 1, the version that it is characterized in that the sealing overhead bin of said suction anchor (stake) can be to add the integral type overhead bin that a base plate constitutes below the top board on anchor top.Also can be to make separately and be additional to split type overhead bin on the anchor top by top board, base plate and barrel.
3. according to the suction anchor (stake) of claim 2, it is characterized in that all being provided with the inlet and outlet pipeline that links to each other with source of the gas or Air compressor on the top board of integral type in the sealing overhead bin of said suction anchor (stake) and split type overhead bin; All be provided with on the base plate with anchor in communicate advance, drain stub; All be provided with advancing of communicating with seawater, drain stub on the barrel.
4. according to claim 3 suction anchor (stake), it is characterized in that the inlet and outlet pipeline that is provided with in the sealing overhead bin of said suction anchor (stake), and advance, drain stub all has valve control, valve control desk and air compressor all place on the water-surface working boat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011432446A CN1317160C (en) | 2002-02-26 | 2002-02-26 | Self-installed suction anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011432446A CN1317160C (en) | 2002-02-26 | 2002-02-26 | Self-installed suction anchor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1440904A true CN1440904A (en) | 2003-09-10 |
| CN1317160C CN1317160C (en) | 2007-05-23 |
Family
ID=27768345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011432446A Expired - Fee Related CN1317160C (en) | 2002-02-26 | 2002-02-26 | Self-installed suction anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1317160C (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069895A (en) * | 2010-12-03 | 2011-05-25 | 中国船舶重工集团公司第七一○研究所 | Soft ground suction anchor mooring device |
| CN102556284A (en) * | 2012-03-02 | 2012-07-11 | 中国石油大学(华东) | Suction penetrating arc-shaped plate anchor, mounting tool for same and construction method for same |
| CN102837804A (en) * | 2012-08-30 | 2012-12-26 | 上海利策科技股份有限公司 | Installation equipment and installation method for suction anchor in deep water |
| CN101708765B (en) * | 2009-12-03 | 2012-12-26 | 中国海洋大学 | Expanded type deep-sea suction anchor and installation method thereof |
| CN102897287A (en) * | 2012-10-26 | 2013-01-30 | 朱元康 | Gravity pendulum type vertical anchor |
| CN103334429A (en) * | 2013-07-16 | 2013-10-02 | 舟山市定海区巨洋技术开发有限公司 | Shallow sea wind electricity facility force absorption pile |
| CN103569318A (en) * | 2013-11-07 | 2014-02-12 | 浙江海洋学院 | Ship mooring gear |
| CN103603364A (en) * | 2013-11-13 | 2014-02-26 | 上海利策科技股份有限公司 | Deepwater suction-type gravity foundation and deepwater mounting device and deepwater mounting method thereof |
| CN104343127A (en) * | 2013-07-31 | 2015-02-11 | 上海利策海洋工程技术有限公司 | Suction pile type gravity foundation and mounting device and method thereof |
| CN104802927A (en) * | 2015-04-28 | 2015-07-29 | 中国海洋石油总公司 | Test device and method for simulating deep water suction force anchor negative pressure installation |
| CN105926664A (en) * | 2016-05-11 | 2016-09-07 | 中国海洋大学 | Negative pressure bucket applicable to ocean wind power and capable of downwards penetrating to position below sea bottom surface, and installation method |
| CN105926627A (en) * | 2016-05-11 | 2016-09-07 | 中国海洋大学 | Suction anchor capable of downwards penetrating to position below sea bottom surface and mounting method thereof |
| CN106218814A (en) * | 2016-08-31 | 2016-12-14 | 中国石油大学(北京) | A kind of be easy to marine towage transport and install suction anchor mechanism |
| CN106240749A (en) * | 2016-07-06 | 2016-12-21 | 中国海洋大学 | Grouting formula suction anchor and installation method thereof |
| CN107905238A (en) * | 2017-10-19 | 2018-04-13 | 太原理工大学 | A kind of soil plug pullout type suction anchor foundation and its construction method |
| CN113148010A (en) * | 2021-02-02 | 2021-07-23 | 海洋石油工程股份有限公司 | Sealing and locking cabin cover of deep water suction anchor |
| CN113386904A (en) * | 2021-07-09 | 2021-09-14 | 中国地质科学院勘探技术研究所 | Bidirectional suction pump device suitable for underwater suction anchor installation |
| CN113734358A (en) * | 2020-05-27 | 2021-12-03 | 中国石油化工股份有限公司 | Deep sea natural gas hydrate suction anchor mechanism and installation method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101298765B (en) * | 2007-08-27 | 2010-04-21 | 天津市海王星海上工程技术有限公司 | Novel single pillar structure and mounting method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8101640A (en) * | 1981-04-02 | 1982-11-01 | Shell Int Research | SUCTION ANCHOR AND METHOD FOR INSTALLING SUCH ANCHOR. |
| US4575282A (en) * | 1984-06-04 | 1986-03-11 | Pardue Sr James H | System for driving open end pipe piles on the ocean floor using pneumatic evacuation and existing hydrostatic pressure |
| NL9400101A (en) * | 1994-01-21 | 1995-09-01 | Hogervorst Johannes R | Method and device for installing a hollow suction pole in the bottom of a water. |
| CN2395980Y (en) * | 1998-07-14 | 2000-09-13 | 天津市海王星海上工程技术有限公司 | Auxiliary pile follower mechanism for attraction anchor |
| JP2003214444A (en) * | 2002-01-22 | 2003-07-30 | Nsk Ltd | Rolling sliding member and rolling device |
-
2002
- 2002-02-26 CN CNB011432446A patent/CN1317160C/en not_active Expired - Fee Related
Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708765B (en) * | 2009-12-03 | 2012-12-26 | 中国海洋大学 | Expanded type deep-sea suction anchor and installation method thereof |
| CN102069895B (en) * | 2010-12-03 | 2013-03-20 | 中国船舶重工集团公司第七一○研究所 | Soft ground suction anchor mooring device |
| CN102069895A (en) * | 2010-12-03 | 2011-05-25 | 中国船舶重工集团公司第七一○研究所 | Soft ground suction anchor mooring device |
| CN102556284A (en) * | 2012-03-02 | 2012-07-11 | 中国石油大学(华东) | Suction penetrating arc-shaped plate anchor, mounting tool for same and construction method for same |
| CN102556284B (en) * | 2012-03-02 | 2014-04-16 | 中国石油大学(华东) | Suction penetrating arc-shaped plate anchor, mounting tool for same and construction method for same |
| CN102837804B (en) * | 2012-08-30 | 2015-04-22 | 上海利策科技股份有限公司 | Installation equipment and installation method for suction anchor in deep water |
| CN102837804A (en) * | 2012-08-30 | 2012-12-26 | 上海利策科技股份有限公司 | Installation equipment and installation method for suction anchor in deep water |
| CN102897287A (en) * | 2012-10-26 | 2013-01-30 | 朱元康 | Gravity pendulum type vertical anchor |
| CN102897287B (en) * | 2012-10-26 | 2014-09-10 | 朱元康 | Gravity pendulum type vertical anchor |
| CN103334429A (en) * | 2013-07-16 | 2013-10-02 | 舟山市定海区巨洋技术开发有限公司 | Shallow sea wind electricity facility force absorption pile |
| CN104343127B (en) * | 2013-07-31 | 2016-12-07 | 上海利策海洋工程技术有限公司 | Suction pile formula gravity foundation and erecting device thereof and installation method |
| CN104343127A (en) * | 2013-07-31 | 2015-02-11 | 上海利策海洋工程技术有限公司 | Suction pile type gravity foundation and mounting device and method thereof |
| CN103569318B (en) * | 2013-11-07 | 2015-11-18 | 浙江海洋学院 | Ship mooring mechanism |
| CN103569318A (en) * | 2013-11-07 | 2014-02-12 | 浙江海洋学院 | Ship mooring gear |
| CN103603364A (en) * | 2013-11-13 | 2014-02-26 | 上海利策科技股份有限公司 | Deepwater suction-type gravity foundation and deepwater mounting device and deepwater mounting method thereof |
| CN104802927A (en) * | 2015-04-28 | 2015-07-29 | 中国海洋石油总公司 | Test device and method for simulating deep water suction force anchor negative pressure installation |
| CN105926627B (en) * | 2016-05-11 | 2018-04-03 | 中国海洋大学 | The suction anchor and its installation method that can be passed through to sea bottom surface down |
| CN105926627A (en) * | 2016-05-11 | 2016-09-07 | 中国海洋大学 | Suction anchor capable of downwards penetrating to position below sea bottom surface and mounting method thereof |
| CN105926664B (en) * | 2016-05-11 | 2018-04-03 | 中国海洋大学 | Suitable for passing through negative pressure cylinder and installation method to sea bottom surface under oceanic winds electric energy |
| CN105926664A (en) * | 2016-05-11 | 2016-09-07 | 中国海洋大学 | Negative pressure bucket applicable to ocean wind power and capable of downwards penetrating to position below sea bottom surface, and installation method |
| CN106240749A (en) * | 2016-07-06 | 2016-12-21 | 中国海洋大学 | Grouting formula suction anchor and installation method thereof |
| CN106218814A (en) * | 2016-08-31 | 2016-12-14 | 中国石油大学(北京) | A kind of be easy to marine towage transport and install suction anchor mechanism |
| CN106218814B (en) * | 2016-08-31 | 2017-05-31 | 中国石油大学(北京) | A kind of suction anchor mechanism for being easy to marine towage to transport and install |
| CN107905238A (en) * | 2017-10-19 | 2018-04-13 | 太原理工大学 | A kind of soil plug pullout type suction anchor foundation and its construction method |
| CN107905238B (en) * | 2017-10-19 | 2019-08-13 | 太原理工大学 | A kind of soil plug pullout type suction anchor foundation and its construction method |
| CN113734358A (en) * | 2020-05-27 | 2021-12-03 | 中国石油化工股份有限公司 | Deep sea natural gas hydrate suction anchor mechanism and installation method |
| CN113148010A (en) * | 2021-02-02 | 2021-07-23 | 海洋石油工程股份有限公司 | Sealing and locking cabin cover of deep water suction anchor |
| CN113386904A (en) * | 2021-07-09 | 2021-09-14 | 中国地质科学院勘探技术研究所 | Bidirectional suction pump device suitable for underwater suction anchor installation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1317160C (en) | 2007-05-23 |
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Denomination of invention: Self-installed suction anchor Effective date of registration: 20130724 Granted publication date: 20070523 Pledgee: Bank of Shanghai Limited by Share Ltd Tianjin branch Pledgor: Tianjin Neptune Marine Engineering Technology Co., Ltd.|Wudi sea hose manufacturing Co., Ltd. Registration number: 2013990000500 |
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Owner name: NEPTUNE OFFSHORE ENGINEERING DEVELOPMENT CO., LTD. Free format text: FORMER NAME: HAIWANGXING OCEAN ENGINEERING TECHNOLOGY CO., LTD, TIANJIN CITY |
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Address after: 300384 Tianjin city Nankai District Huayuan Industrial Zone, Road No. 12 Pu e building 6 B zone Patentee after: NEPTUNE OFFSHORE ENGINEERING DEVELOPMENT CO., LTD. Address before: 300384 Tianjin city Nankai District Huayuan Industrial Zone, Road No. 12 Pu e building 6 B zone Patentee before: Haiwangxing Ocean Engineering Technology Co., Ltd, Tianjin City |
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Date of cancellation: 20141119 Granted publication date: 20070523 Pledgee: Bank of Shanghai Limited by Share Ltd Tianjin branch Pledgor: Tianjin City Neptune marine engineering technology Limited by Share Ltd|Wudi loyal hose manufacturing Co., Ltd. Registration number: 2013990000500 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Self-installed suction anchor Effective date of registration: 20141120 Granted publication date: 20070523 Pledgee: Bank of Shanghai Limited by Share Ltd Tianjin branch Pledgor: NEPTUNE OFFSHORE ENGINEERING DEVELOPMENT CO., LTD. Registration number: 2014990000973 |
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Change date: 20141119 Registration number: 2013990000500 Pledgor after: Tianjin City Neptune marine engineering technology Limited by Share Ltd Pledgor after: Wudi loyal hose manufacturing Co., Ltd. Pledgor before: Tianjin Neptune Marine Engineering Technology Co., Ltd. Pledgor before: Wudi sea hose manufacturing Co., Ltd. |
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Date of cancellation: 20160108 Granted publication date: 20070523 Pledgee: Bank of Shanghai Limited by Share Ltd Tianjin branch Pledgor: NEPTUNE OFFSHORE ENGINEERING DEVELOPMENT CO., LTD. Registration number: 2014990000973 |
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Denomination of invention: Self-installed suction anchor Effective date of registration: 20160125 Granted publication date: 20070523 Pledgee: Bank of Shanghai Limited by Share Ltd Tianjin branch Pledgor: NEPTUNE OFFSHORE ENGINEERING DEVELOPMENT CO., LTD. Registration number: 2016120000003 |
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