We are looking to purchase:1. click type regulator as shown in the product image with the following requirements: a. flow rate: 0-4 lpm b. incoming pressure at 50 psi c. outlet connection port is 1/8 NPT female without any fitting d. inlet connection fitting is 1/4 NPT male e. finish is anodized aluminum or silverWe would purchase MOQ the first order. Annual usage is 5,000We would require 2 samples of your exiting stock items closely met our requirements to send to us now using our DHL account.2. Oxygen regulators with the folowing requirements: a. flow rate 0-4 lpm b. incoming pressure 50-3000 psi c. outlet connection port is M8*1.25 female without any fitting d. incoming connection is M14*1.5 female without any fitting e. has no pressure gauge f. finish is anodized aluminum or silver g. will have our brand and logo printed on the body Would purchase MOQ at fist order. Annual usage is 10,000. would require 2 samples of your existing stock items closely met our requirements sent by our DHL account.Thank youTrong Nguyen Show More