Sir i am 16 years old kid in sri lanka and i am currently building a product. Actually i have presented it to the sri lankan national invention competition and got the first place within the galle district and got the chance to face all island competition. Unfortunately i wasn't able to win that.But I am keep trying to develop it better and better. But now i have faced some issues in the process of manufacturing it. I think you can help me to resolve those problems. Is there any way to contact you sir? By the way i am actually very impressed with your videos.Thank you sir.