3W 395nm 400nm 405nm 3535 SMD LED

GMKJ is an ISO Certificated manufacturer of high quality, high reliability LED diodes, formed in January of 2009. Our staff has over 10 years of experience with excellent English. All of our employees have a strong work ethic and a strong commitment to provide the high quality products that consistently meet or exceed our customer's requirements.

Our Service:
PCB design & Reflow soldering service
COB/LED/Drivers customization
Mold development (Plastic injection & Die casting)
Representatives in the UK, Korea and Czech.
ISO9001-2008, SGS, TUV, BV, CNAS accredited laboratory & Optical Lab.

Shipping Options:
1. By Express: such as DHL, UPS, TNT, FEDEX etc. The dispatch time is about 10-15 days.
2. Air Freight: when your order more than 100kgs which will be more economical than express.
3. Sea Freight: we will update sea freight once we know your sea port where goods will be delivered.
4. Agent designated by client: please tell us the contact detail of your shipping agent and we will arrange to deliver the items.

Why uv wavelength is harmful to human eyes and skins?

Ultraviolet (UV) radiation is a type of electromagnetic radiation with shorter wavelengths than visible light. It is divided into three categories based on wavelength: UVA, UVB, and UVC. UV radiation from the sun can be harmful to human eyes and skin due to its ability to cause damage at the cellular level. Here are the primary reasons why UV radiation is considered harmful:

• Eye damage: UV radiation can cause damage to the eyes, particularly the cornea and the lens. Prolonged exposure to UV radiation is associated with conditions such as cataracts, which can lead to vision impairment. The cornea can also be affected, leading to conditions like photokeratitis (similar to sunburn but affecting the cornea) or pterygium (a growth on the eye's surface).
• Skin damage: UV radiation can penetrate the outer layers of the skin and affect the DNA within skin cells. This can lead to various skin issues, including sunburn, premature aging (wrinkles and age spots), and an increased risk of skin cancers, such as melanoma, basal cell carcinoma, and squamous cell carcinoma.
• Immunosuppression: UV radiation can suppress the immune system in the skin, reducing its ability to defend against certain diseases and increasing the risk of skin cancer.

UVA rays have longer wavelengths and penetrate the skin more deeply, contributing to premature aging and an increased risk of skin cancer. UVB rays have shorter wavelengths and primarily affect the outer layers of the skin, causing sunburn and contributing to skin cancer. It's worth noting that the Earth's atmosphere absorbs almost all UVC and the majority of UVB, allowing only UVA and a small amount of UVB to reach the surface.

To protect against the harmful effects of UV radiation, it is essential to use sun protection measures such as sunscreen, protective clothing, and sunglasses that block both UVA and UVB rays. These precautions help minimize the risk of eye and skin damage from prolonged exposure to UV radiation.

For more details, please write back to us GMLEDs Team directly!