Thanglong Minerals & Metals Co., Ltd was founded in 2001. We started our business with counter-weight block for elevator with clients mainly local elevator companies and import-export trading companies. We are now not only dealing in counter-weight for elevator, but manhole covers and frames, fence and decors and other cast iron products as well. Our products have been being supplied to local consumers and for export. Oversea clients are from Japan, Korea, Taiwan, Indonesia, Malaysia, Spai...