... " to 4" 2Types:A, B, C, D, DC, DP, E, F 3Material:PP-R High quality PP typeDF rubber coupling 1Sizes ... " to 4" 2Types:A, B, C, D, DC, DP, E, F 3Material:PP-RCOMPANY INTRODUCTION Ninghai Xinming Hard&Plastic Factory.Iocated ... near Ningbo KangEr Underwear Co.,LTD, PP-R camlock fitting type DF