Environmental noise affects hearing primarily through a process of "cumulative damage."​ It's not just about feeling "annoyed"; it gradually and irreversibly damages the auditory cells in the inner ear, much like boiling a frog in warm water.We hear sound thanks to hair cells (auditory receptors) in the cochlea of the inner ear. Imagine them as a field of delicate wheat:Short-term impact: Sudden loud noises (e.g., explosions, firecrackers) are like a storm that directly snaps the wheat (hair cells), causing immediate and irreversible hearing loss (explosive deafness).Long-term erosion: Prolonged exposure to noise environments above 85 decibels (e.g. noisy workshops, subway commutes, long-term headphone use at high volume) is like strong winds constantly blowing over the wheat field. Hair cells gradually die due to metabolic overload and cannot regenerate.Beyond industrial noise, the most hidden hearing threats in modern life are:1.Excessively loud headphones: In-ear headphones in noisy environments easily exceed 85 dB, and immersion makes it hard to notice.2.Commuting noise: Subway cabins often reach 90 dB; daily one-hour commutes can cause cumulative damage over time.3.Entertainment venues: Noise in bars and concerts often exceeds 100 dB; a few hours can cause tinnitus and temporary hearing loss. Protection Suggestions 60/60 rule: Keep headphone volume below 60% and limit continuous use to 60 minutes.Physical noise isolation: Use noise-canceling headphones or earplugs in noisy environments (e.g., subways) instead of raising the volume to mask noise.Regular "quiet time": Give your ears recovery time; avoid continuous, prolonged exposure to noise.Hearing damage is irreversible. Once hair cells die, current medical technology cannot restore them. Protecting your hearing is essentially protecting your quality of life for decades to come.On the other side, check your hearing regularly with FUTURESUN hand-held hearing screener, it will tell you if your hearing is hurt or not.

A qualified stove fan usually relates to below points:1.Blades start to rotate at a low stove surface temperature between 50~65℃, of course it depends on the size and quantity of blades.2.The TEG can really work under high stove surface temperature up-to 350℃ for at least 3 months without breaking.3.The whole stove fan body does not get smoke, color fading, shape-changing under high stove surface temperature up-to 350℃4.Push warm air to far areas away from stove gently and silently.5.A nice stove fan should be an artistic metal sculpture as well, it can bring you a feel of culture and beauty.All FUTURESUN stove fans are designed according to above 5 points.

Usually, a thermometer should be calibrated by a much higher accuracy temperature source. A high accuracy thermometer often gives a reading with a deviation within ±0.5℃ comparing to standard temperature source, on the other side, an accurate thermometer always give a clear and stable reading on LCD.What can make a thermometer accurate:1.High accuracy semiconductor temperature sensor, which brings not only high accuracy, but also long life span.2.A mesh-covered and separate sensor housing which is exposed to outside space sufficiently. (temperature sensor not hidden inside the thermometer body)3.Air-flow can go freely and thoroughly around the sensor housing and also thermometer body, then the sensor can breath freely there and gives accurate signal to thermometer.Our newly born digital thermo-hygrometer DM-216L is just designed according to above points and can really bring you high accuracy reading also icons of action suggestions.

A useful soil tester usually is multifunctional and easy operation. Our newly born soil tester PM-182 integrate 8 functions into a single unit, including testing functions for pH, moisture, temperature, EC, N contents, P contents, K contents of soil and also Lux value of surrounding. As a result, you needn’t take many testers to measure all those parameters, just insert the metal sensor probe into soil, then you push the button step by step to read all the 8 parameter values on LCD screen.

Animals’ ear easily get accustomed to a single frequency noise like human beings. Most under-ground animal repellers in market emits only a single frequency sound which makes under-ground animals feel un-comfortable for several days, in a course of un-comfort and hesitation, they gradually get used to the noise, then they decide not to run away, as there are their food and babies. Our 3rd generation under-ground animal repeller RR-388 adopts an innovative mutative-frequency technology, as a result, animals never know what is a next noise like and when it will occur, so they get crazy and mad, then run away quickly and in a panic.