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