Ten considerations for buying solid wood furniture

Wood furniture, comprehensive wood furniture, and all solid wood furniture are collectively referred to as solid wood furniture . 1. Wooden furniture: Except the decorative parts and accessories in the main components, the rest are made of wood materials such as wood and artificial board. 2. Solid wood furniture: furniture made of solid wood sawn wood or solid wood board as the substrate, with the surface treated; or coated with solid wood veneer or veneer (wood veneer) on this type of substrate, and then painted Furniture. Solid wood plate refers to solid wood material formed by secondary processing such as jointing material and integrated wood. 3. Comprehensive wood furniture: furniture made of solid wood, artificial board and other materials. Therefore , pay attention to the following items when purchasing solid wood furniture :

1. The state stipulates that the wood of general solid wood furniture must be dried, and its moisture content needs to be below 12%. The wood that is still being eroded by insects must not be used. The surface and the parts where the items are stored must not have resin capsules. So how do we judge the moisture content of the wood of solid wood furniture is below 12%? In fact, it is very simple. Put it on the palm of your hand and stay for 10 seconds. The thin feeling can be felt as long as it is dry wood. In addition, the solidity of the wood can be judged by the quality of the price difference wood, but it should be noted that the larger the weight of the wood, the better.


2. The function of the furniture must meet the needs of the family, and the size of the furniture must be suitable for the space. If the height of the middle headroom of the writing desk is greater than 580 mm; the width of the middle headroom is greater than 520 mm; the height of the seat surface of the chair is 420 or 440 mm; the width of the armchair is greater than 460 mm; The height of the short coat is greater than 850 mm; the depth of the hanging coat is greater than 500 mm.


3. All the parts of the artificial board used in the furniture should be edge-sealed, and various accessories must be installed with no missing parts, missing nails, or through nails. If we choose to respect furniture without edge banding when choosing furniture, the environmental protection of such furniture must also be unqualified.


4. Solid wood furniture should be firm in structure and the frame should not be loose. It is not allowed to break the tenon and the material. Don't buy "Thirty-one Furniture" that saws particleboard with a saw, a nail, a paint. Don't buy furniture made with "three no" drawers that have no grooves, no plugs and no bottoms.


5. The surface of the panel (such as door panel, countertop, etc.) should be smooth, without obvious warpage. Under normal circumstances, the diagonal length of the face is greater than or equal to 1400 mm, and the allowable value of plate warpage is greater than or equal to 3 mm.


6. Solid wood furniture must have completeness and stability. When the two cabinet doors are opened 90 degrees, gently pull forward by hand, the cabinet body cannot automatically tilt forward; the glass of the bookcase door must be edged and treated; The back mirror should be installed on the dressing mirror and dressing table, and the glass mirror surface should be fixed with the bead.


7. The cabinet door and drawer switch should be flexible. When the drawer is pulled out by two thirds, the sag is less than or equal to 20 mm, and the left and right swing bottom is less than or equal to 15 mm.


8. When the panel is covered with thin wood and other materials, it is required to be tight and smooth, and no glue penetration, degumming or bubbling is allowed.


9. The paint film on the surface of solid wood furniture should be flat and bright, and the color of the unit or the complete set of products should be similar. The paint film on the surface of the product is not allowed to wrinkle, sticky and leak paint. The interior of the product and other painted parts should be kept clean.


10. After purchasing furniture, we must also pay attention to the maintenance of the furniture, especially the handling of the furniture after the purchase. Avoid bumps and scratches during handling; level the cabinet body before loading clothes to make the door evenly split and open flexibly; do not use wet mop to collide the skirts and feet of furniture; when cleaning painted surfaces Do not use chemical brightener to wipe the dust, you can use a dry and wet cloth to wipe off the gloss after dusting off; the newly purchased furniture must not be exposed to the sun, let alone near the heater to prevent wood Excessive changes in water content cause furniture deformation.

(Source: Jiuzheng Building Material Network Editor: Peter)

Zinc Sulfide Lens

Multi-spectral grade of zinc sulfide has low absorption and scatter properties over its broad transmission range of 0.4 - 12μm. Zinc Sulfide Multispectral is a chemically vapor deposited material which is commonly used in thermal imaging. With its excellent transmission properties in the visible and infrared, Zinc Sulfide Multispectral is the material of choice for systems that have both visible and mid-wave or long-wave infrared sensors. It is slightly harder and more chemically resistant than zinc selenide.

We consistently offer various high quality optical components according to the customer's requirements use other infrared materials. Such as prisms,Spherical Lens, aspherial lens,Ball lens,Optical Windows,Achromatic Lens,cylinder lens etc.

Zinc Sulfide cleartran uncoated

ZNS Optical properties

ZnS physical properties


ZnS lens and ZnS windows specifications:

Standard precision High-precision
Dimension Tolerance φ5-100mm+0/-0.2 φ3-250mm+0/-0.2
Center Thickness Tolerance 1-15mm+/-0.1 1-30mm+/-0.05
Centration 1 arc minutes 10 arc seconds
Surface Quality 60/40 40/20
Power(fringe@633nm) N<λ@633nm(in 25mm) N<λ/4@633nm(in 25mm)
Clear Aperture >90% >95%
Chamfer Protected <0.5mmx45deg Protected <0.5mmx45deg


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