building up assembly items

Hello there

I'm just setting up QB Enterprise and I am not sure how to handle labor costs and How can I allocate shipping and freight costs to the inventory assemblies? 

We are a small lighting factory. our typical work is assembling and packing the lighting products 

firstly we purchase the raw materials and the packaging materials from other factories and then receive them in our store

then, in the production stage we hire some workers to assemble the items and create the final product and they also do the laser marking and  packing work 

then when the goods are finished, QC company handle the inspection 

after that the products are stored until the delivery time then loaded into the container 

so now we have 

the raw materials 

boxes and cartons 

designing products and boxes  

delivering goods from and to our factory 

loading and unloading goods when receiving the goods and loading the containers 

laser marking costs 

assembly costs 

packing costs 

inspection fees

 container loading costs 

I am stuck at recording these costs into the assembly. so what is the best way to create the assembly item including all these costs because my boss used to have each cost recorded separately in excel sheets before moving to QB 

I tried to add the labor cost only inside the assembly and keep other costs as expenses but this way we don't get the value of the assembly item correctly

so please advise how to solve it and how to deal with the bills containing these costs 

Thanks in advance