Do you know how many types of indoor wooden doors there are?

According to the opening method
Swing door: the most common, connected to the door frame by hinges, can be opened inward or outward, with good sealing, suitable for bedrooms, study rooms and other spaces.
Sliding door: uses tracks to slide, does not take up space, suitable for places with small spaces, such as kitchens, balconies and living room partitions.
Folding door: multiple door leaves are connected by hinges, which can be folded up when opened to save space. They are often used to partition spaces or as wardrobe doors.
Spring door: equipped with a spring device, which can be closed automatically. It is usually used in public places and is rarely used indoors.

According to the internal structure
Full solid wood door: made of natural logs, with natural texture and good texture, but the price is higher, and the wood drying process is strictly required, otherwise it is easy to deform.
Solid wood composite door: made of a variety of materials such as wood and artificial boards, the surface is often covered with veneer or melamine board, the appearance is similar to that of solid wood doors, the price is moderate, and the stability is good.
Plywood molded hollow door: with plywood and wood as the skeleton, the surface layer is pressed and glued or molded by artificial board or PVC board, etc., with a hollow structure in the middle, light weight and low price, but relatively weak sound insulation and thermal insulation performance.

According to the surface coating
Paint door: The surface is sprayed with paint technology, with rich colors and good gloss, which can show the texture of wood, but requires regular maintenance.
Paint-free door: The surface material is generally PVC, Boeing film, melamine, etc., no need to paint, good environmental protection, affordable price, but the texture and durability are slightly worse.
Paint door: The base material is density board, which is processed by paint technology and is divided into piano paint and metal paint. The surface is smooth, bright in color, easy to clean, but afraid of bumps and scratches.