Adjacent benzene is general-purpose colophony 280, double-loop (DC) the hand papers colophony 240, man-made stone / stone stone colophony 230, pull crowded colophony 240, twine structural layer colophony 260, twine a benzene liner colophony 290, colophony of NPG mould pressing 180, colophony of DPG mould pressing 210. Raw material market is puissant pull litre, colophony price go up again move 300 yuan. This Zhou Zaizhong petrifaction pulls down those who raise pure benzene price to drive continuously, styrene and suitable anhydride price appear to go up considerably raise, drive synchronism of other breed raw material to rise at the same time. UPR is forced to go up again below the pressure that cost rises continuously tone price. Current market is weirder, on one hand in petrifaction with average everyday 100 yuan speed helps litre of pure benzene price continuously, additional on one hand, no matter be styrene or the downstream market that arrange anhydride are in delicate and fatigued and weak condition, significant demand is not worth badly. Among them an apparent feature is, with what differ before be, this the adjustment of UPR price did not cause the linkage of downstream market to answer, so far, downstream client did not appear to be bought before go up not to buy action of dropping stock of the equipment that grab goods, except just needed to purchase beyond, whole market appears quiet all the more. This kind of case also appears in the industrial catenary of styrene etc raw material. The sales volume that because rise in price,this props up raw material hard with respect to the demand that shows terminal market and brings increases, show market of whole chemical industry is in apparent sluggish to bilge in condition. Because the breed of a lot of raw material such as pure benzene, styrene and suitable anhydride is in what there will be new plant go into operation July to anticipate, because this round of endurance that rise in price still remains to observe further, the key depends on the follow-up of pure benzene goes situation. " 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.