... resistance to shock and impact8, resistance to all kinds of chemical liquid9, high temperature reisitance ,the maximum water temperature ... and cost14, over 50 years of service life under 70 degree, and about 100 years of service life under normal conditions, ... .Competitive price, superior quality, best service 5.We have a strong ability of developing and producing new productsPROFESSIONAL MANUFACTUREIf ...