CN211695319U - Hidden fresh air pipeline system - Google Patents
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- CN211695319U CN211695319U CN202020287064.5U CN202020287064U CN211695319U CN 211695319 U CN211695319 U CN 211695319U CN 202020287064 U CN202020287064 U CN 202020287064U CN 211695319 U CN211695319 U CN 211695319U
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Abstract
The utility model belongs to the field of fresh air equipment, and discloses a hidden fresh air pipeline system, which comprises a fresh air distribution box, wherein the fresh air distribution box is pre-embedded in the outer wall of a building, and an air inlet and an air outlet which are used for being connected with a fresh air machine are arranged on the fresh air distribution box; the fresh air branch pipe is embedded in the building structural member, and is communicated with the air outlet and used for conveying fresh air in the fresh air distribution box to each room of the building. The fresh air distribution box and the fresh air branch pipe are respectively embedded in the building outer wall and the building structural member, so that the fresh air distribution box and the fresh air branch pipe do not occupy the building height and space, the influence of the later period on the space in a house is reduced, and the living experience of a user is improved; in addition, the fresh air branch pipe is embedded in the building structural member, so that the fresh air branch pipe is not restricted by indoor decoration, and the requirement of air outlet at any indoor place is convenient to realize.
Description
Technical Field
The utility model relates to a new trend equipment field especially relates to a hidden new trend pipe-line system.
Background
The fresh air system is a set of independent air processing system consisting of an air supply system and an air exhaust system and is divided into a pipeline type fresh air system and a pipeline-free fresh air system. The pipeline type fresh air system consists of a fresh air fan and pipeline accessories, the fresh air fan purifies outdoor air and guides the outdoor air into a room, and the indoor air is discharged through a pipeline.
With the increasing demand of residential buildings for the comfort of residences, the household fresh air system is gradually used in newly built residential buildings. At present, when a pipeline type fresh air system is installed, a pipeline with the fresh air system occupies the floor height of a house, and the problem of limitation on ceiling decoration is solved, so that the living experience of a user is influenced.
Disclosure of Invention
The utility model aims at providing a hidden fresh air pipe-line system through with the pipeline pre-buried in building outer wall or building structure outer wall, can avoid occuping the house floor height, improves user's living experience.
The utility model provides a technical scheme as follows:
a hidden fresh air duct system, comprising:
the fresh air distribution box is pre-buried in the outer wall of the building, and is provided with an air inlet and an air outlet which are used for being connected with a fresh air fan;
the fresh air branch pipe is embedded in the building structural member, and is communicated with the air outlet and used for conveying fresh air in the fresh air distribution box to each room of the building.
In the scheme, the fresh air distribution box is pre-embedded in the outer wall of the building, the fresh air distribution box and the civil structure are constructed simultaneously, the pre-embedded fresh air distribution box does not occupy the height and space of the building, the utilization rate of the building is improved, and the connection between the external fresh air machine and the air inlet of the fresh air distribution box is facilitated; every new trend branch pipe of being connected with the air outlet of new trend distributor box is pre-buried in building structure component, constructs with civil engineering integration, reduces the influence of later stage tuber pipe to the indoor space of house, and can be convenient for realize the demand of different air-out modes.
Further preferably, the bottom of the fresh air distribution box is provided with a first air outlet;
the fresh air branch pipe comprises a first fresh air branch pipe;
the first fresh air branch pipe is communicated with the first air outlet, and the first fresh air branch pipe is pre-buried in the structural floor slab.
In this scheme, through the pre-buried position of reasonable setting new trend branch pipe, the quantity is taken over in the corner of reducible new trend branch pipe, reduces the probability of leaking out.
Further preferably, a second air outlet is formed in the side wall of the fresh air distribution box;
the fresh air branch pipe comprises a second fresh air branch pipe;
the second fresh air branch pipe is communicated with the second air outlet, and the second fresh air branch pipe is embedded in the structural shear wall or the structural beam.
Further preferably, the first fresh air branch pipe extends in the plane of the structural floor within the structural floor, and the first fresh air branch pipe is provided at an intermediate position of the structural floor in the thickness direction.
In this scheme, when new trend branch pipe is pre-buried in structural floor, set up according to structural floor's atress characteristics, can furthest reduce pre-buried tuber pipe to structural floor's influence.
Further preferably, the second fresh air branch pipe is pre-embedded in the structural shear wall and extends along the height direction of the structural shear wall, and the second fresh air branch pipe is arranged in the middle of the structural shear wall along the thickness direction.
In the scheme, when the fresh air branch pipes are embedded in the structural shear wall, the fresh air branch pipes are arranged according to the stress characteristics of the structural shear wall, so that the influence of the embedded air pipes on the structural shear wall can be reduced to the greatest extent.
Further preferably, the second fresh air branch pipe is embedded in the structural beam and extends along the height direction of the structural beam, and the second fresh air branch pipe is arranged in the middle of the structural beam.
In this scheme, when new trend branch pipe is pre-buried in the structure roof beam, set up according to the atress characteristics of structure roof beam, can furthest reduce the influence of pre-buried tuber pipe to the structure roof beam.
Further preferably, the height from the top of the second fresh air branch pipe to the top of the structural beam is greater than or equal to 150 mm;
the height from the bottom of the second fresh air branch pipe to the bottom of the structural beam is more than or equal to 150 mm.
In this scheme, when pre-buried new trend branch pipe, the new trend branch pipe does not run through whole structure roof beam, can improve the structural strength of structure roof beam, reduces the influence to the structure roof beam.
Further preferably, the steel bar cage is further included;
the fresh air distribution box is fixed in the building outer wall through the reinforcement cage;
the fresh air branch pipe is fixed in the building structural member through the reinforcement cage.
In this scheme, the steel reinforcement cage not only can fix a position and fix new trend distributor box and new trend branch pipe, can carry out the reinforcement to building structure component moreover. The density of reinforcing bar can be adjusted according to the position of new trend branch pipe to guarantee the stability of new trend branch pipe and the intensity of structural component.
Further preferably, the section of the fresh air branch pipe is rectangular or oval.
In this scheme, the fresh air branch pipe adopts the flat pipe that the cross-section is rectangle or oval, can reduce the influence to structural component.
Further preferably, the section length of the fresh air branch pipe is less than or equal to 150 mm;
the section width of the fresh air branch pipe is less than or equal to 40 mm; and/or;
the thickness of the concrete on the two sides of the fresh air distribution box is more than or equal to 70 mm.
The technical effects of the utility model reside in that: the fresh air distribution box and the fresh air branch pipe are respectively embedded in the building outer wall and the building structural member, so that the fresh air distribution box and the fresh air branch pipe do not occupy the building height and space, the influence of the later period on the space in a house is reduced, and the living experience of a user is improved; in addition, the fresh air branch pipe is embedded in the building structural member, so that the fresh air branch pipe is not restricted by indoor decoration, and the requirement of air outlet at any indoor place is convenient to realize.
Drawings
The invention will be described in further detail with reference to the following drawings and embodiments:
fig. 1 is a schematic plan view of a hidden fresh air pipeline system according to the present invention;
FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken at B-B of FIG. 1;
fig. 4 is a schematic structural view of a fresh air distribution box of a hidden fresh air pipeline system of the present invention pre-buried in a building outer wall;
fig. 5 is a schematic structural view of the second fresh air branch pipe of the hidden fresh air pipeline system of the present invention pre-buried in the structural shear wall;
fig. 6 is a schematic structural view of the second fresh air branch pipe of the hidden fresh air pipeline system of the present invention pre-buried in the structural beam;
fig. 7 is a schematic structural diagram of the first fresh air branch pipe of the hidden fresh air pipeline system of the present invention pre-buried in the structural floor slab.
The reference numbers illustrate:
1. a fresh air distribution box; 11. an air inlet; 12. an air outlet; 121. a first air outlet; 122. a second air outlet; 2. a fresh air branch pipe; 21. a first fresh air branch pipe; 22. a second fresh air branch pipe; 3. a structural floor slab; 4. a structural beam; 5. a structural shear wall; 6. and (4) a reinforcement cage.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.
In order to more clearly illustrate embodiments of the present invention or technical solutions in the prior art, specific embodiments of the present invention will be described below with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort.
The utility model provides a hidden fresh air pipeline system, as shown in fig. 1 to 4, comprising a fresh air distribution box 1 and a fresh air branch pipe 2, wherein the fresh air distribution box 1 is pre-embedded in the building outer wall, and the fresh air distribution box 1 is provided with an air inlet 11 and an air outlet 12 which are used for being connected with a fresh air machine; the fresh air branch pipe 2 is pre-buried in a building structural member, and the fresh air branch pipe 2 is communicated with an air outlet 12 of the fresh air distribution box 1 and used for conveying fresh air in the fresh air distribution box 1 to each room of a building.
The fresh air distribution box 1 is pre-buried in the building outer wall, the building outer wall is not the main stress structure of the building, and the pre-burying of the fresh air distribution box can not influence the overall stability of the building. An air inlet 11 can be arranged on the side wall of the fresh air distribution box 1, the air inlet 11 is exposed out of the outer wall of the building, the air inlet 11 can be connected with an external fresh air fan, and the fresh air fan can be arranged outside the outer wall of the building and does not occupy indoor space.
Fresh air distributor box 1 adopts the flat structure, and the length and width of fresh air distributor box 1 can be confirmed according to the quantity of air outlet 12, and fresh air distributor box 1's thickness is adjusted according to the thickness of building outer wall, and when the thickness of building outer wall was 200mm, fresh air distributor box 1's thickness was less than 60mm as far as possible to make concrete pouring back, the concrete thickness of fresh air distributor box 1 both sides was not less than 70mm, in order to ensure building outer wall self intensity, satisfied structural load's demand. Preferably, the fresh air distribution box 1 is made of a high-strength material so as to prevent the fresh air distribution box 1 from being damaged due to compression when concrete is poured. The fresh air distribution box 1 can also be arranged in a heat preservation way according to project requirements, and if heat preservation is adopted, the heat preservation integrated fresh air distribution box can be preferentially adopted. The fresh air distribution box 1 is connected with an air inlet through an air pipe, and the air inlet adopts a structure to reserve a fresh air static pressure box.
The fresh air branch pipe 2 is pre-embedded in a building structural member, and the building structural member comprises a structural floor slab 3, a structural beam 4, a structural shear wall 5 and the like; the fresh air branch pipe 2 and the structural member are integrally constructed. Because the cross-sectional area of the fresh air branch pipe 2 is smaller than that of the structural member, the structural strength of the building cannot be influenced by embedding the fresh air branch pipe 2 in the structural member. The tail end of the fresh air branch pipe 2 can be connected with a tail air port at the later stage, the tail air port is arranged by adopting an adjustable air port, and the air quantity of the air port is adjusted and controlled by the tail air port.
In the embodiment, the fresh air distribution box 1 and the fresh air branch pipe 2 are respectively embedded in the building outer wall and the building structural member, so that the fresh air distribution box 1 and the fresh air branch pipe 2 do not occupy the building height and space, the influence of the later period on the space in a house is reduced, and the living experience of a user is improved; in addition, new trend branch pipe 2 is pre-buried in building structure component, can not receive interior decoration's restraint, is convenient for realize the demand of indoor arbitrary local air-out, if can realize different air supply modes such as ground air supply, skirting line air supply, top air supply, and new trend distributor box 1 and new trend branch pipe 2 are pre-buried do not influence indoor pleasing to the eye.
In one embodiment, as shown in fig. 1 to 4, the bottom of the fresh air distribution box 1 is provided with a first air outlet 121; the fresh air branch pipe 2 comprises a first fresh air branch pipe 21; the first fresh air branch pipe 21 is communicated with the first air outlet 121, and the first fresh air branch pipe 21 is pre-buried in the structural floor slab 3. When the fresh air distribution box 1 is pre-buried, the bottom end of the fresh air distribution box 1 is close to the upper position of the structural floor slab 3, the bottom of the fresh air distribution box 1 is provided with a first air outlet 121, a first fresh air branch pipe 21 communicated with the first air outlet 121 is pre-buried in the structural floor slab 3, and the number of corner connection pipes of the first fresh air branch pipe 21 can be reduced.
The side wall of the fresh air distribution box 1 is also provided with a second air outlet 122; the fresh air branch pipe may also include a second fresh air branch pipe 22; the second fresh air branch pipe 22 is communicated with the second air outlet 122, and the second fresh air branch pipe 22 is embedded in the structural shear wall 5 or the structural beam 4. The shape and size of the first fresh air branch pipe 21 and the second fresh air branch pipe 22 may be the same or different, that is, the shape and size of the first fresh air branch pipe 21 and the second fresh air branch pipe 22 may be set according to actual project requirements. The side wall of the fresh air distribution box 1 is provided with a second air outlet 122, and the second fresh air branch pipes 22 communicated with the second air outlet 122 can be pre-embedded in the structural shear wall 5 or the structural beam 4, so that the number of corner connection pipes of the second fresh air branch pipes 22 can be reduced. The fresh air branch pipe 2 can only comprise the first fresh air branch pipe 21, or only comprise the second fresh air branch pipe 22, or comprise the first fresh air branch pipe 21 and the second fresh air branch pipe 22 at the same time, and can be selected according to project requirements when actually embedded.
Specifically, as shown in fig. 2 and 3, the number of the first fresh air branch pipes 21 is two, P3 and P5; the number of the second fresh air branch pipes 22 is four, and the number of the second fresh air branch pipes is P1, P2, P4 and P6, wherein the P3 and the P5 are pre-embedded in the structural floor slab 3, the P1, the P2 and the P4 are pre-embedded in the structural shear wall 5, and the P6 is pre-embedded in the structural beam 4. The P3 and the P5 are connected with a first air outlet 121 at the bottom of the fresh air distribution box 1; the P1, P2, P4 and P6 are respectively connected to the second air outlet 122 on the side wall of the fresh air distribution box 1.
Preferably, as shown in fig. 7, the first fresh air branch duct 21 extends in the plane of the structural floor 3 within the structural floor 3, and the first fresh air branch duct 21 is provided at a middle position of the structural floor 3 in the thickness direction. The structural floor slab 3 is a flat plate, the first fresh air branch pipe 21 is horizontally arranged in the structural floor slab 3, and on the cross section of the structural floor slab 3, the first fresh air branch pipe 21 is positioned at the middle position of the structural floor slab 3 along the thickness direction, namely the distance between the top of the first fresh air branch pipe 21 and the top surface of the structural floor slab 3 is equal to the distance between the bottom of the first fresh air branch pipe 21 and the bottom surface of the structural floor slab 3. The structural floor slab 3 is a whole large plane slab, and the first fresh air branch pipes 21 are horizontally arranged in the middle of the structural floor slab 3 in the thickness direction, so that the influence of the pre-buried fresh air branch pipes 2 on the structural floor slab 3 can be reduced.
Preferably, the fresh air branch pipe 2 is a flat pipe, that is, the first fresh air branch pipe 21 and the second fresh air branch pipe 22 are both flat pipes. The section of the fresh air branch pipe 2 is rectangular or oval, the length of the section of the fresh air branch pipe 2 is less than or equal to 150mm, and the width of the section of the fresh air branch pipe 2 is less than or equal to 40 mm. The thickness of structural floor slab 3 is generally 120mm, the level of fresh air branch pipe 2 is pre-buried in structural floor slab 3 back, the top of fresh air branch pipe 2 is apart from the height e1 more than or equal to 40mm of 3 top surfaces of structural floor slab, the bottom of fresh air branch pipe 2 is apart from the height e2 more than or equal to 40mm of 3 bottom surfaces of structural floor slab, make fresh air branch pipe 2 upper portion and lower part still have the concrete of certain thickness, and fresh air branch pipe 2's cross-sectional length only is 150mm, it is less to account for the planar proportion of whole structural floor slab 3, with furthest reduce the influence of pre-buried fresh air branch pipe 2 to structural floor slab 3. Of course, if the thickness of the structural floor 3 is increased, the section width of the fresh air branch pipe 2 can be increased appropriately.
As shown in fig. 5, the second fresh air branch pipe 22 extends in the height direction of the structural shear wall 5 within the structural shear wall 5, and the second fresh air branch pipe 22 is disposed at a middle position of the structural shear wall 5 in the thickness direction. The structural shear wall 5 is vertically arranged, and the second fresh air branch pipe 22 is also vertically arranged in the structural shear wall 5 and is located in the middle of the structural shear wall 5 in the thickness direction. The thickness of the structural shear wall 5 is generally 200mm, the width of the cross section of the second fresh air branch pipe 22 is less than or equal to 40mm, the thicknesses a and b of the shear walls on the two sides of the second fresh air branch pipe 22 are respectively greater than or equal to 80mm, the width of the cross section of the second fresh air branch pipe 22 only accounts for 1/5 of the thickness of the structural shear wall 5, the load requirement of the structural shear wall 5 can be still guaranteed, and the influence of the embedded fresh air branch pipe 2 on the structural shear wall 5 is reduced to the greatest extent. If the thickness of the structural shear wall 5 is increased, the section width of the fresh air branch pipe 2 can also be increased properly.
As shown in fig. 6, when the second fresh air branch pipe 22 is pre-buried in the structural beam 4, it extends along the height direction of the structural beam 4, and the second fresh air branch pipe 22 is disposed in the middle of the structural beam 4. The vertical setting of structural beam 4, second new trend branch pipe 22 is also vertical to be set up in structural beam 4, and be located structural beam 4's positive intermediate position, structural beam 4's thickness generally is 200mm, second new trend branch pipe 22's cross-sectional width less than or equal to 40mm, the thickness c1 and the c2 of the roof beam of second new trend branch pipe 22 both sides are more than or equal to 80mm respectively, second new trend branch pipe 22's cross-sectional width only accounts for the 1/5 of structural beam 4's thickness, still can guarantee structural beam 4's load demand, with furthest reduce pre-buried new trend branch pipe 2 to structural beam 4's influence. If the thickness of the structural beam 4 is increased, the section width of the second fresh air branch pipe 22 can be increased appropriately. Preferably, the height d1 between the top of the second fresh air branch pipe 22 and the top of the structural beam 4 is greater than or equal to 150 mm; and the height d2 of the bottom of the second fresh air branch pipe 22 from the bottom of the structural beam 4 is more than or equal to 150 mm. Not pre-buried new trend branch pipe 2 in the height of 150mm at the top of structural beam 4 and the height of 150mm in the bottom of structural beam 4, can guarantee structural strength of structural beam 4 to reduce the influence to structural beam 4.
As shown in fig. 4 to 7, when the fresh air distribution box 1 is embedded in the building outer wall and the fresh air branch pipe 2 is embedded in the structural member, the fresh air distribution box and the fresh air branch pipe are positioned and fixed through the reinforcement cage 6. When installing new trend distributor box 1 or new trend branch pipe 2, install partial reinforcing bar earlier, then install new trend distributor box 1 or new trend branch pipe 2 on the reinforcing bar of installation to reinforcing bar support new trend distributor box 1 or new trend branch pipe 2 through the installation, then install the reinforcing bar respectively and fixed formation steel reinforcement cage 6 in the top and the side of new trend distributor box 1 or new trend branch pipe 2, fix new trend distributor box 1 and new trend branch pipe 2, cause new trend distributor box 1 or new trend branch pipe 2 to shift when avoiding concrete placement. When concreting, in order to avoid fresh air distribution box 1 and fresh air branch pipe 2 to be damaged, fresh air distribution box 1 preferentially adopts high strength material, and fresh air branch pipe 2 should preferentially adopt the high strength tuber pipe. When the fresh air branch pipe 2 needs to preserve heat, an integrated heat preservation air pipe structure is preferentially adopted.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a hidden fresh air pipe-line system which characterized in that includes:
the fresh air distribution box is pre-buried in the outer wall of the building, and is provided with an air inlet and an air outlet which are used for being connected with a fresh air fan;
the fresh air branch pipe is embedded in the building structural member, and is communicated with the air outlet and used for conveying fresh air in the fresh air distribution box to each room of the building.
2. The hidden fresh air duct system of claim 1,
the bottom of the fresh air distribution box is provided with a first air outlet;
the fresh air branch pipe comprises a first fresh air branch pipe;
the first fresh air branch pipe is communicated with the first air outlet, and the first fresh air branch pipe is pre-buried in the structural floor slab.
3. The hidden fresh air duct system according to claim 1 or 2,
a second air outlet is formed in the side wall of the fresh air distribution box;
the fresh air branch pipe comprises a second fresh air branch pipe;
the second fresh air branch pipe is communicated with the second air outlet, and the second fresh air branch pipe is embedded in the structural shear wall or the structural beam.
4. The hidden fresh air duct system of claim 2,
the first fresh air branch pipe extends along the plane of the structural floor slab in the structural floor slab, and the first fresh air branch pipe is arranged in the middle of the structural floor slab in the thickness direction.
5. The hidden fresh air duct system of claim 3,
the second fresh air branch pipe is pre-embedded in the structural shear wall and extends along the height direction of the structural shear wall;
the second fresh air branch pipe is arranged in the middle of the structural shear wall along the thickness direction.
6. The hidden fresh air duct system of claim 3,
the second fresh air branch pipe is embedded in the structural beam and extends along the height direction of the structural beam, and the second fresh air branch pipe is arranged in the middle of the structural beam.
7. The hidden fresh air duct system of claim 6,
the height from the top of the second fresh air branch pipe to the top of the structural beam is more than or equal to 150 mm;
the height from the bottom of the second fresh air branch pipe to the bottom of the structural beam is more than or equal to 150 mm.
8. The hidden fresh air duct system of claim 1,
the steel bar cage is also included;
the fresh air distribution box is fixed in the building outer wall through the reinforcement cage;
the fresh air branch pipe is fixed in the building structural member through the reinforcement cage.
9. The hidden fresh air duct system of claim 1,
the section of the fresh air branch pipe is rectangular or elliptical.
10. The hidden fresh air duct system of claim 1,
the section length of the fresh air branch pipe is less than or equal to 150 mm;
the section width of the fresh air branch pipe is less than or equal to 40 mm; and/or;
the thickness of the concrete on the two sides of the fresh air distribution box is more than or equal to 70 mm.
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|---|---|---|---|
| CN202020287064.5U CN211695319U (en) | 2020-03-10 | 2020-03-10 | Hidden fresh air pipeline system |
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| CN202020287064.5U CN211695319U (en) | 2020-03-10 | 2020-03-10 | Hidden fresh air pipeline system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111623501A (en) * | 2020-03-10 | 2020-09-04 | 朗诗集团股份有限公司 | Hidden fresh air pipeline system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111623501A (en) * | 2020-03-10 | 2020-09-04 | 朗诗集团股份有限公司 | Hidden fresh air pipeline system |
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Effective date of registration: 20220511 Address after: 210032 floor 5, building A4, Zidong International Creative Park, No. 2, Zidong Road, Maqun street, Qixia District, Nanjing, Jiangsu Province Patentee after: NANJING LVHUI ENERGY TECHNOLOGY CO.,LTD. Address before: Room 328, building 28, high tech Development Zone, Nanjing, Jiangsu 210032 Patentee before: Landsea Group Co.,Ltd. |
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