Rock series 150W sodium ballast is designed for horticulture and agriculture.By using patented technology and new designed circuit, the ballast can work reliably and safety at any time.
Samarium cobalt magnets (also known as SmCo magnets), are extremely powerful permanent magnets. Part of the rare-earth magnet family, SmCo magnets rank similarly in strength to neodymium magnets but have much higher temperature stability and higher coerci
Big and functional backpack bags . It is a casual styles and good for outside activities . Material is mainly woven polyester , it is light and comfortable.