... the electronics teaching supplies, especially 36 to 96 months,l add funs to learnigng 6.Customer sound, housing design ... Packing: Bulk packed in polybag, outer carton or strictly according to your detail requirements.Quotation information needed: Size, paper materials, ... quantities and shippment.-- Delivery:Usually 3 to 5 working days for sampling and 20 to 25 working days after sample approval.-- ...