南宁SOP for plate flat welding flange
南宁Blind flange bl
南宁Threaded flange tr
南宁Flat welding flange with neck
南宁Neck butt welding flange
Add: B3 Workshop, Jinze town industrial zone,Qingpu,Shanghai
Tel: 021-59261579
Email: panhy@sh-wakamatsu.com
