HM is 3535 series of no domed packaging which use our innovative white light LED chip technology. HM can endure higher current drive (max .3000mA),and is no need to do phosphor coating  and has natural advantage of good directional emission with lambert curve light. It has special structure design to give more lumens compared with other existing products and its advantages such as low  thermal resistance and fast heat dissipation can make better reliability. At the same time ,flat lens and flat lens and small chip spacing is easy for second optical design.