Adjacent benzene is general-purpose colophony 230, double-loop (DC) the hand papers colophony 400, man-made stone / stone stone colophony 70, pull crowded colophony 80, twine structural layer colophony 170, twine a benzene liner colophony 190, colophony of NPG mould pressing 320, colophony of DPG mould pressing 350. The spurt in prices that arrange anhydride, colophony cost rises, 200-400 of the attune on market price yuan. This week colophony raw material is major breed keeps stable, the particular value that arrange anhydride all the way violent wind rises, cause colophony cost to rise considerably, UPR factory is forced to go up tone price. As a result of plant of exit, portion short-term stop production is overhauled and certain person waits for the influence of a lot of respect for the element, suitable anhydride price rises madly abruptly, create enormous pressure to downstream UPR industry. At present UPR industry is in the condition of fluctuation be in a dilemma, spurt in prices of upriver raw material, downstream demand is fatigued and weak, the client rises in price to colophony show infrequent intense resentment, force partial UPR factory to must raise price cautiously, the market that causes many areas thereby appeared brutal price war, industry profit level falls considerably. From the point of all sorts of elements, by August before, suitable anhydride price has hard still considerably the evidence of fall after a rise, but drive as the comprehensive go back to work of factory of short stop work, the situation that supplies extreme nervousness will get preliminary alleviate. And the demand of UPR downstream market is short-term inside the sign that still cannot see clear improvement. " experience introduction " : The downstream client of UPR is more very with export or project kind the market is relevant, accordingly downstream user often hopes to be in accept the order when can will export order for goods or one-time all lock decides the UPR amount that project order place needs and value, but the force with upriver market because UPR industry is right enough lack and control force, the price of UPR factory can passive follow of price of upriver raw material change and undertake adjustment. Accordingly, every time UPR price appears relatively during changing substantially, create the contradiction between UPR factory and downstream user easily. Divide the experience of the enterprise according to eye forehead, good means of settlement is UPR produces factory and downstream client to undertake deepness bind, the interest shares everybody, the risk is carried together, who doesn't blame. Particular way is: In sign gross contract when, sign a price to change adjust methodological clause, namely basis " colophony price index " the price index that publishs is fluctuant extent, both sides assumes price index severally 50% of fluctuant part, calculate every week the price, implement the price actually as what delivering goods day is in a week. The practice of partial enterprise proves, this kind of method not only fairness is reasonable, and those who have the price but foresight, need not both sides delivers goods every time want bargain. This experience consults for everybody.