alkali &acidaaresisting, anticorrosion, insulating, innoxious, endurable for water pressure, agingaaresistant, easy to fix PVC pipe ... project, water discharge in building, farmland drip or spray irrigation, electrical engineering and golf course. It is alkali &acid ... —resisting, anticorrosion, insulating, innoxious, endurable for water pressure, aging—resistant, easy to fix and has good ...