future units
3.As the enemy has no strength to spare now and will never be able to attend to everything even when he has the strength to spare, it is absolutely necessary for us to decide on the policy, for the present, of spreading guerrilla warfare far and wide and setting up temporary base areas in the plains and, for the future, of preparing to keep up guerrilla warfare by small units, if only seasonally, and of creating base areas which are not fixed.
5.development trend of polyethylene pipe and resin for making tubes and the utilization of ots products both at home and abroad are introduced． The development orientation of new products is pointed out in view of characteristics of PE production units in plastic plant of daqing petrochemical company according to the market demand and future development in China．
