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Sales scope: In addition to producing and selling to domestic provinces and some overseas regions, the company also cooperates with dozens of well-known enterprises at home and abroad to operate dozens of products. The company with high quality products, good reputation, sales throughout the country and overseas continents.
Types and identification methods of jade
Mineral (rock) name: the main mineral is jadeite, can contain hornblende, albite, chromite, sodium chromium pyroxene, diopside, omphene, zeolite and so on. The internal structure is a crystalline aggregate, often fibrous, granular or partially columnar aggregate. Glass gloss to grease gloss. Mohs hardness: 6.5~7. Density: 3.34( 0.06,-0.09)g/cm3. Refractive index: point measurement is usually 1.66. The two groups are completely cleavage, and the collection can see tiny cleavage surface flash, which is called "emerald".
Sales scope: In addition to producing and selling to domestic provinces and some overseas regions, the company also cooperates with dozens of well-known enterprises at home and abroad to operate dozens of products. The company with high quality products, good reputation, sales throughout the country and overseas continents.
The 1/3 of life is spent in sleep. The four major signs to measure whether people have "healthy sleep" are: sufficient sleep, sufficient time, good quality and high efficiency; Easy to fall asleep; Sleep is continuous and will not be interrupted. Sleep deeply and well, wake up tired and so on. The quality of sleep is closely related to the mattress. When choosing a mattress, consumers can choose from the permeability, decompression, support, obedience, bed tension, sleep temperature and sleep humidity of the mattress. Because each person's specific circumstances are different, such as weight, height, fat and thin, as well as personal living habits, preferences, etc., people should choose according to their own specific circumstances and local climate and personal economic income conditions. One of the most basic requirements is supine can maintain lumbar physiological lordosis, body curve normal; lateral lying to do not make lumbar bending, lateral bending.
What are the considerations when buying a mattress?
Whether genuine mattresses are brown pads, spring cushions or cotton pads, the product logo has the product name, registered trademark, manufacturing company name, address, contact number, and some have certificates of conformity and credit cards. The vast majority of mattresses sold on the market without factory name, address and registered trademark are inferior products with low quality and low price.
How to Measure the Softness and Hardness of Mattress
How to call soft and hard moderate? The simplest measurement method is: lie on your back, stretch your hands to the three obvious curved places between the neck, waist and buttocks to the thigh to see if there is any gap; Turn over to one side and use the same method to test whether there is any gap between the concave part of the body curve and the mattress. If not, it proves that this mattress fits the natural curves of the neck, back, waist, buttocks and legs when people sleep. Such a mattress can be said to be soft and hard. Everyone has different preferences for the softness and hardness of the mattress. Some people like to sleep on a hard bed, while others like to sleep on a soft bed. What hardness of the mattress is a good mattress?
In a 2009 survey, 59 healthy people were selected to sleep on their mattresses for 28 nights in a row, and the other 28 nights on new, medium-hard mattresses. Finally, the stress levels of the 59 respondents were assessed, including worry, sadness, tension, headache, etc. The survey found that the new bed significantly reduced people's sense of stress and reduced physical discomfort.
Factors to consider when selecting waist protection
The former need to buy high waist, the latter need to buy low waist. Patients with lumbar disc herniation need to buy high waist, and postpartum women often need to protect the pelvis, this time low waist but better.
How to choose a cervical pillow, an ideal pillow, the most basic to make the pillow can closely fit the physiological curvature of the cervical spine, so that people who work, study and live a day, relieve the fatigue of cervical muscles and ligaments during sleep.
Pillows play an important role in people's sleep. Suitable pillows can help you sleep more sweetly, but long-term use of unsuitable pillows can cause a series of chronic strain and even develop into cervical spondylosis. Experts point out that even a pillow that is used may not be the most suitable. How to choose the right pillow and what is the correct way to use the pillow? Let's listen to the expert's guidance.