We are Fuzhou Zhengyin Metalworks Co.,Ltd. we are supplying: 1, Camlock couplings (cam and groove coupling) 2, Guillemin coupling, 3, Safety clamp (Norm DIN2817) 4, Tank truck coupling (Norm DIN28450) We also supply accessories as followings: a) Bauer type coupling b) Universal crowfoot coupling (US type and European type) c) Sand blast coupling d) Double bolt clamp e) T-bolt clamp f) Spiral clamp g) Foot valve and strainer h) Ground joint coupling (steam hose coupling) i) Pin-lug hose shank j) Whipcheck safety cable k) King combination nipple and hose mender http://barrypanchina.spaces.live.com