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