Look: perforated beads stare at the eye
Perforated beads are actually better viewed because they expose the inner structure. The pearls are grown in layers of shellfish with some shellfish secretions, so the pearl cuts can be seen layer by layer from the beads. If it is false, the structure inside will be relatively simple or even have a plastic or glass core.
Bite: lightly rubbing the surface with a sense of sand
The practicality of the bite test pearl is a very early folk soil method. It has been tested this way since ancient times, and it is also a relatively accurate method. But don't misunderstand, here is not to bite the pearl to prove its true and false, but you should use your teeth to gently rub the surface of the pearl to see if there is a feeling of grit, the sand feels that you have worn away part of it. Pearl powder, then the probability that this pearl is really big is bigger.
Grinding: rubbing each other with a sense of sand
This method is the same as the method of rubbing with a tooth. If you feel clean or don't want to work, just rub the two beads together to see if you can rub a little pearl powder. If there is no powder and no obstruction, it is mostly coated fake.
Color: Pearl has 'Baoqi' to not deceive people
We have always described jewellery as "the jewel of the pearl". This is not just a common description, but it really represents the special luster and feeling that jewelry will have. Among them, "Pearl Light" is the pearl luster that is described. It should be called "stunning" with a special optical effect created by a special refraction. The true halo is very vivid and lively, while the stun of the pearl is very flat. This requires you to take a look at the real pearls and train them for basic aesthetics.
Zoom in: see if there is a feeling of gravel on the surface
This is actually the same as the friction method, except that the friction is to use your hand to feel its gritty feeling, while the magnification observation is to use the eyes to see the surface. The surface of the pearl is not so uniform, and there are many feelings that the pearl powder is unevenly distributed, which is generally invisible to the naked eye.
Thermal Bonded Non Woven Fabric
What is thermal bonded non-woven fabric?
Thermally bonded non-woven fabrics are non-woven materials produced by heating and melting low-melting fibers (polyester, polypropylene, etc.) in an oven during the production process, and then solidifying into a network after cooling. Thermally bonded non-woven fabrics are manufactured on the principle that where two or more fibers intersect, the low-melting fibers can be heated to melt each other, and when the fibers cool, they will be bonded, resulting in fabric strength and properties.
Thermally bonded non-woven fabrics are widely used in snow boot insulation cotton, sofa filling materials, pillow filling materials, quilts and other products, etc.
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