Roth Capital says JinkoSolar last week reported a Q4 miss and "weak" Q1 outlook. The company's margins were hurt from rising commodity costs, but management sees modest sequential improvement with slightly higher selling prices, the analyst tells investors in a research note. Roth remains on the sidelines with a Neutral rating and $25 price target. It wants to see "consistent, healthy" margin and profitability performance from Jinko before recommending the shares.