孟加拉采购需求：差压变送器，差压传感器，工业液位变送器，工业液位传感器，低价液位变送器，温度传感器

We are looking to source a magnetic liquid level switch and gauge, both equipped with transmitters. The switch should be capable of handling a specified flange type and pressure rating, with a notable range and density specification. It should operate on a 24V DC supply and provide a 4-20 mA output signal. Preferred vendors would be from Shanghai YuanWang Level Instrument Co. Ltd or equivalent manufacturers. In addition, we require a magnetic liquid level gauge that meets similar specifications in terms of flange, range, and pressure. Both items will be needed in a quantity of one each. Please confirm availability, pricing, and lead times for these products. Looking forward to your prompt response!