Wuxi Yihong Matel Products Co.,Ltd Established in the year 2006, we are manufacture and supplier ofRock Bolts, Self-Drilling Anchor Bolt, Thread Hollow Bar, Rock rodswith ISO 9001:2008 Certification.Yihong has been striving toprovide excellent quality rock drilling tools for tunnelingproject,mining exploration.hydro engineering projects and otheinfrastructure construction etc. The entire rang of products are entirely manufactured by our expertprofessionals by making use of latest technology and advancetools&machines for the advancements of all our products .Wehave Tensile Testing Machine to test the bar quality,so that toguarantee all of the products delivered to customers are qualidied.Available in different sizes and specifications,our products areextensively appreciated for their durability,seamless finishingservice life. We have had long term cooperation with China Railway ConstructionCroup Co.,Ltd, China Railway Tunnel Overseas Engineering Co.,Ltd ,Sinohydro Group Ltd And China Railway Tunnel Stock Co.,Ltd ect.Yihong is confident for the chanllenges in the development .In thefuture ,we'll make full use of pratical experience to research anddevelop more new and better products.Customers are alwanys ourpriority .Yihong devotes itself to provide one-stop service forevery customer and seek long-team development. We'll keep improvingthe quality of products and service ,hoping can cooperate with youin the future,thanks.