Yes. If no any pandemic we will attend the industry fair
Small parcels packed by cardboards, big items are packed by wood crate as necessary
we have made solar system products over 10 years
If you are alreay our regular customers we can provide the spare parts for free, but we don't affort the shipping
Yes, we have installation manual for every item we made
When you placed the trial order we have to charge the cost, if the sample is suitable for your using, then you place the bulk order, we will reduce the sample fee for you.