In shanghai and wuhan ,runlong has established a quite good station for production ,chemical intermediate and raw materials are (run-hua)runlong 's original poroducts ,now we mainly poroduce the readily marketable chmical poroducts which opend up by exprets .high technology are fully used during poroduction process .the chmical poroducts we can offer are ethyl vinyl ether, n-butyl vinyl ether A batch of experts and prefect staffs assemble in runlong .the amout of the staffs who know well about some specialized technology are about 55% of the total staffs .advanced detection means and testing equipment offer strong support for poroduction.runlong believes that process happans elaboration .