YW International Industry Ltd. is a Canadian Company based in Calgary, Alberta. We are leading downhole fibreglass tube, Carbide Orifice supplier. Serving oil industry 10 years already. We offer innovative quality fibreglass tubes for MWD / LWD battery packs and downhole instrumentation(EM tool) and Carbide Orifice for all downhole applications. In addition, we supply customer design fiberglass tubes and carbide orifice or other parts for downhole and mining application. Please contact us for the quote.