Ceramic plunger for piston pumps

We require Ceramic plunger (Rotary-reciprocating) piston pumps for one of our product. Below given are the basic specifications;1. Flow rate:- 30ml/min.2. Stroke:- 100 microlitre/revolution, adjustable. accuracy <1%3. Media:- DI water, 0.1N HCL, 4% SLS, 7.4pH Buffer,4. Drive motor:- Stepper motor, 4 wire Bipolar connections, 17 Frame,5. Pressure:- 120PSI.You are kindly requested to revert with the availability and cost of the pumps. Our annual requirement quantity = 500nos.