There are tubes that emit heat, tubes that emit light, and tubes that emit both. If you have a pet that needs a lot of UVB light tube (like a turtle, tortoise, bearded dragon, chameleon, etc.), you'll need a special UVB tube. UVB light, on the other hand, benefits all reptiles and amphibians and should be provided. The UVB lamp is made of special quality glass material and special powder with special production technology; The lamps can be used breed aquatics field, pet house and makes them healthier. Well-trained and experienced staffs to answer all your inquiries in fluent English regarding OEM & ODM.