Rika is a sensor manufacture & solution provider of environmental and weather monitoring for 10+ years
Yes, We are SENSOR manufacturer and exporter in china with 10+ years experience and with the factory authorized by SGS.
Yes, we can offer OEM service and design the logo marking for you. But the minimum quantity is 10pcs for the first order.
Sorry , we do not offer free samples . You should pay for the samples and freight cost.