... silica sol process had been adopted. We mainly produce stainless steel castings, carbon steel casting and alloy casting. ... such as stainless steel pipe fitting,ball valve,union,quick coupling, shackles, wire rope clips, ringer, turnbuckles, snap hooks ... , swivel, pulley, link, hinge and so on.Look forward to establishing long-term business relations with you. Aoshang Stainless ...