We have 150 employees and 50% of them have college education, our assets are about RMB 20 millions. We have more 20sets Deep Hole Drilling and Boring Machine, Heat Treatment Machine and CNC Gas Thread Machine. We can manufacture slick Drill Collar, Spiral drill collar, Non-magnetic Drill Collar, Square Kelly, Hexagonal Kelly, Heavy weighted Kelly, All GB type series Kelly, All type Tool Joint and Lifting Sub ect.