Chemring rises as UK unit signs five-year partnership with US contractor
** Shares of global aerospace and defence products maker Chemring CHG.L up 1.6% at 508 p
** CHG's UK unit Roke Manor Research signs five-year strategic partnership with major US prime contractor
** ROKE receives initial production order worth $16 million, with agreement worth at least $170 mln over five years
** YTD, stock up about 6%