buy SHOULDER TO SHOULDER TAPE

We are a trader in Vietnam. Our job supply equipment for M&E Contractors、 such as: Noise and vibration control system、 valves and gauges.Now、 noise and vibration control system is developed well. But valves department is not. We usually buy valves from other trader. Example: Agent of "Ring brand"(Taiwan)*****Then we need to find a good Supplier that origin is Taiwan、 Singapore、 Malaysia、 Korea、 ***** can O E M product from China.We buy about 800、 000.00usd for 1 year.Valves that we buy: Gate valve、 wafer check valve、 Y strainer、 butterfly valve、 rubber expansion joint、 pressure reducing ***** is iron and brass.