Sensors as key functional and critical technical parts on electrical devices, we have serious working flow to ensure our components fit well with full devices, before formal ordering , our engineer will issue Specifications and technical drawings according to your requests input, we can prepare reasonable qty.free sample for on site evaluation, calibation report available for comparing tests, and full set of documanations available before formal part release. And after sales, we will always be willing to hear your voice towards consistant improvements.