The present disclosure provides a composite structure, including first and second structure layers which are opposite to each other and adjustment bodies. The first structure layer includes first structure bodies. The second structure layer includes second structure bodies. The first structure bodies and the second structure bodies are staggered. First connecting portions protruding toward the second structure layer are provided at predetermined positions on the first structure bodies where the first structure bodies are staggered relative to the second structure bodies, and second connecting portions protruding toward the first structure layer are provided at predetermined positions on the second structure bodies where the second structure bodies are staggered relative to the first structure bodies, and the first connecting portions and the second connection portions are staggered. The adjustment bodies are connected in a layer direction between the first connecting portions and the second connecting portions.

A single-layer plastic composite board (20; 30; 40) is disclosed. The single-layer plastic composite board is a two-piece single-layer plastic composite board comprising a single-layer plastic sheet (11; 21) and a stiffener (22; 32), wherein the single-layer plastic sheet (11; 21) has a main body portion (111; 211) and a peripheral portion located around the main body portion; the peripheral portion bends towards the back of the main body portion in a direction perpendicular to the main body portion to form a bent portion (112; 212); and the stiffener (22; 32) is engaged with and fixed to the bent portion (112; 212) of the single-layer plastic sheet (11; 21). The single-layer plastic composite board has advantages such as a simple structure, small thickness, light weight, high strength, low cost and ease of manufacturing, and can be widely used as a cabinet board, a box board, a table board, a drawer board, a seat board and a backrest of a chair, etc.

A single-layer plastic composite board (20; 30; 40) is disclosed. The single-layer plastic composite board is a two-piece single-layer plastic composite board comprising a single-layer plastic sheet (11; 21) and a stiffener (22; 32), wherein the single-layer plastic sheet (11; 21) has a main body portion (111; 211) and a peripheral portion located around the main body portion; the peripheral portion bends towards the back of the main body portion in a direction perpendicular to the main body portion to form a bent portion (112; 212); and the stiffener (22; 32) is engaged with and fixed to the bent portion (112; 212) of the single-layer plastic sheet (11; 21). The single-layer plastic composite board has advantages such as a simple structure, small thickness, light weight, high strength, low cost and ease of manufacturing, and can be widely used as a cabinet board, a box board, a table board, a drawer board, a seat board and a backrest of a chair, etc.

A single-layer plastic composite board (20; 30; 40) is disclosed. The single-layer plastic composite board is a two-piece single-layer plastic composite board comprising a single-layer plastic sheet (11; 21) and a stiffener (22; 32), wherein the single-layer plastic sheet (11; 21) has a main body portion (111; 211) and a peripheral portion located around the main body portion; the peripheral portion bends towards the back of the main body portion in a direction perpendicular to the main body portion to form a bent portion (112; 212); and the stiffener (22; 32) is engaged with and fixed to the bent portion (112; 212) of the single-layer plastic sheet (11; 21). The single-layer plastic composite board has advantages such as a simple structure, small thickness, light weight, high strength, low cost and ease of manufacturing, and can be widely used as a cabinet board, a box board, a table board, a drawer board, a seat board and a backrest of a chair, etc.

A single-layer plastic composite board (20; 30; 40) is disclosed. The single-layer plastic composite board is a two-piece single-layer plastic composite board comprising a single-layer plastic sheet (11; 21) and a stiffener (22; 32), wherein the single-layer plastic sheet (11; 21) has a main body portion (111; 211) and a peripheral portion located around the main body portion; the peripheral portion bends towards the back of the main body portion in a direction perpendicular to the main body portion to form a bent portion (112; 212); and the stiffener (22; 32) is engaged with and fixed to the bent portion (112; 212) of the single-layer plastic sheet (11; 21). The single-layer plastic composite board has advantages such as a simple structure, small thickness, light weight, high strength, low cost and ease of manufacturing, and can be widely used as a cabinet board, a box board, a table board, a drawer board, a seat board and a backrest of a chair, etc.

A metal product includes a metal substrate, at least one first hole, at least one second hole, and at least one third hole. The first hole is formed in a surface of the metal substrate. The second hole is formed in at least one of a portion of the surface of the metal substrate without the first hole and an inner surface defining the first hole. The third hole is formed in at least one of a portion of the surface of the metal substrate without the first hole and without the second hole, a portion of the inner surface defining the first hole without the second hole, and an inner surface defining the second hole. The first, second, and third holes enhance a bonding strength between the metal product and a material product. The disclosure also provides a metal composite and a method for manufacturing the metal product.

A metal product includes a metal substrate, at least one first hole, at least one second hole, and at least one third hole. The first hole is formed in a surface of the metal substrate. The second hole is formed in at least one of a portion of the surface of the metal substrate without the first hole and an inner surface defining the first hole. The third hole is formed in at least one of a portion of the surface of the metal substrate without the first hole and without the second hole, a portion of the inner surface defining the first hole without the second hole, and an inner surface defining the second hole. The first, second, and third holes enhance a bonding strength between the metal product and a material product. The disclosure also provides a metal composite and a method for manufacturing the metal product.

Provided is a base plate unit, which is of an integrated structure made of fiber reinforced polymer-matrix composite and comprises a base plate unit body and foot plates. The base plate unit body comprises at least one bearing part, each bearing part comprising a panel, a plurality of web plates extending downwards from the bottom of the panel, and bottom supports disposed at the lower end of the web plates. The web plates comprise two side-web plates on the two sides of the panel and a middle web plate in the middle. The foot plates are disposed on the two outer sides of the bottom of the base plate unit body, and are formed by the bottoms of the two side-web plates on the outmost side of the base plate unit body respectively extending outwards horizontally. Also provided is a base plate unit provided with a cavity filling member.

Provided is a base plate unit, which is of an integrated structure made of fiber reinforced polymer-matrix composite and comprises a base plate unit body and foot plates. The base plate unit body comprises at least one bearing part, each bearing part comprising a panel, a plurality of web plates extending downwards from the bottom of the panel, and bottom supports disposed at the lower end of the web plates. The web plates comprise two side-web plates on the two sides of the panel and a middle web plate in the middle. The foot plates are disposed on the two outer sides of the bottom of the base plate unit body, and are formed by the bottoms of the two side-web plates on the outmost side of the base plate unit body respectively extending outwards horizontally. Also provided is a base plate unit provided with a cavity filling member.

Provided is a base plate unit, which is of an integrated structure made of fiber reinforced polymer-matrix composite and comprises a base plate unit body and foot plates. The base plate unit body comprises at least one bearing part, each bearing part comprising a panel, a plurality of web plates extending downwards from the bottom of the panel, and bottom supports disposed at the lower end of the web plates. The web plates comprise two side-web plates on the two sides of the panel and a middle web plate in the middle. The foot plates are disposed on the two outer sides of the bottom of the base plate unit body, and are formed by the bottoms of the two side-web plates on the outmost side of the base plate unit body respectively extending outwards horizontally. Also provided is a base plate unit provided with a cavity filling member.