Anti-noise earplugs (insulated earplugs) are generally made of silicone or low-pressure foam molding material, highly elastic polyester material. After being inserted into the ear canal, it is in close contact with the external auditory canal to isolate the sound from entering the middle ear and inner ear (ear drum) to achieve the purpose of sound insulation, so that people can get a rest or work environment. Classified by material, function, shape. 1. Classified by material Silicone earplugs: In general, the silicone ear hair made by Guo Degang has reusable performance, but due to the softness of silicone is too low, long-term wear can often cause ear canal discomfort, and even feeling of pain. Also, because silicone is not as soft as a sponge, it does not fit snugly against the walls of the ear canal, and sound-insulating effects tend to be less desirable than sponge earplugs. Sponge-type earplugs: The low-pressure foam molding material, anti-noise earplugs made of high-resilient polyester material have a smooth surface, slow rebound, no pain when the ear is used, and the sound insulation effect is between 25dB-40dB. The kind of earplugs that work in this big pot of rice is very suitable for sleeping every night, but because of the slow rebound effect after washing, it cannot be used repeatedly. In general, the sponge earplugs are disposable. However, with the development of science, there are some sponge ear plugs on the market that can be used repeatedly for more than six months and can be scrubbed. Wax earplugs: Wax earplugs are the earliest ancestors of anti-noise earplugs, which can be softened by hand and shaped to fit the ear canal. However, the disadvantage is that it is not hygienic. The wax may remain in the ear canal and is not easy to clean. And wearing a long ear will feel pain 2. Classified by shape The most common form of anti-noise earplugs is the bullet head type. There are also Bacou's patented rocket (T-shaped), horn, cylindrical and tripod. Bullet shape: used more types, recognized sponge earplugs are more comfortable and good sound insulation Rocket type: easy to pull out, but easy to cause gaps in the ear canal, resulting in poor sound insulation. Trumpet shape: hard center, easy to insert earplugs, silicone material Christmas tree shape: silicone material is generally used to bring a slight feeling of pain, for labor protection earplugs and swimming earplugs Pagoda Shape: Derived from bullet shape, earplug shape developed by 3M company. Cylindrical: This earplug has a high degree of softness and can be easily shaped into a shape suitable for the ear canal. However, compared with the bullet head and the rocket type, since the two heads are the same width, the end that enters the ear canal does not easily fit into the size of the ear canal. China Labor Insurance Network
Phlizon`s COB series Grow Light emits all the wavelengths of light which can be fully absorbed by the plants to create.
Best full Specturm designed to perfectly match large areas of indooor plants, especially for Medical Plant.
COB + Dual-chip,most efficient spectrum,high PPFD.Two cooling fans with double ball(import from Japan) and big aluminum heat sink to protect the grow lights from high temperature,good cooling,long lifespan.Photosynthesis and promote healthy growth budding and flowering.
1000w/2000w /3000w COB LED Grow Light, it will give you more options when your plants need different strength of illumination.
Grow Lights are a great choice for growers who are dealing with hot HPS lights and want to change to something that's going to run cooler. Although LED Grow Lights do produce heat,the smaller models might not bring up the temperature of your grow space.Even the more powerful models of LED grow lights that produce a lot of heat still have built-in cooling systems to help prevent the heat from beaming directly down onto your plants.
2000w cob led grow light Features
Indoor grow light
COB series, high power branded CREE COB with high Par value and deeper penetration
VEG/BLOOM and STRONGER switches for each grow stage.
Special spectrum for plant growing to increase the yield.
Building to Harvest: Beneficial for seeding to fruiting stage.
Good quality fans with low noise.
Easy to install by minute
Energy Saving, environmental friendly
3 Years Warranty
Detailed images of 2000w cob led grow light
Applications
Hydroponics, Horticulture, Agriculture and Greenhouse
Locations: Farm, Exhibition, Garden, Home, Urban, Bonsai, and University Lab
Growth of Fruits, Vegetables, Flowers and so on
Seeding, Rooting, Breeding, Flowering and Fruiting period
Packaging and Shipping
3. Customers specifying freight forwarders or negotiable shipping methods!
4. Delivery Time: stock avaiable sample will be delivered immediately ; 3-7 days for trial order; 7- 25 days for batch goods
Suggestions:
1.Clean the dust inside every 6 months to ensure the good heat dissipation and long life time.
2.Don`t keep too short distance to the plant canopy to avert leaves bleaching.
3. Highly hang the lamp will weaken the energy and affect the growth cycle of the plants, so the lamp should not be hang too high.
4. While taking care of the plants, please spray the leaves and branches 2-3 times everyday, to ensure the plants do not wrinkle a wither, and have no phenomenon of few fruit, and hard pericarp
Trade Terms
Payment: T/T, L/C, Paypal, 30% deposits before production, 70% balance to be paid before deliverying(Western Union are welcome)
Sample will be delivered within 7 working days.
Discounts are offered based on order quanlityes.
MOQ:sample order are acceptable
Delivery ways:DHL,UPS,FedEx,TNT, door to door,by sea,by air,etc.
If you are interested in, and
1.own several store for agriculture in your local market
2.or in the business of grow light equipment
3.or good relationship with grower or greenhouse owner
To be a distributor, max support will be offered:
1.price support
2.technical support
3.new product support
4.24 hours after-sales service online
PH-B-L4,2000W Led Grow Light,Optic Cob Led Grow Lights,450W Cree Cob Grow Light,2000W Cob Led Lights Shenzhen Phlizon Technology Co.,Ltd. , https://www.philizon.com
Compare led grow light to traditional HPS/MH grow light
WHAT MAKE UP AN EXCELLENT LED GROW LIGHT ?
1.PPFD Value : PPFD is Photosynthetic Photon Flux Density. When you choose a plant light, you should compare the PPFD values of different plant lights. The larger the value, the better the growth of the plant.
2.Actual Power: Because the actual power of the plant light always varies with different conditions, all Amazon sellers use the rated power to describe the power of the product because the rated power is constant. When you pick a LED grow light, the rated power of the plant light is a reference, and more importantly is the actual power.
3.Core Coverage: In addition to the above two, when you choose a plant light, you also need to compare the cover area of different plant lights, of course, the size of the core coverage area. In general, in germination stage, you can hang the plant light higher and the cover area is larger. In flowering stage you can hang the plant light lower and the cover area is smaller because the plant needs more light at this stage. You have to compare different coverage areas to choose the plant light that suits you.
2. By Air or by Sea for batch goods, for FCL; Airport/ Port receiving;
Classification and use of noise reduction earplugs
1. UPS/DHL/FEDEX/TNT /EMS for samples, Door-to-Door;