Second, what is the best way to recycle? What should I do if the product is unqualified? Don't pay the manual fee or pay for the materials yourself? Now many scams are like this, assembling parts for you, and then refusing to recycle the finished products on the grounds that they are unqualified. Someone once tried to buy qualified products and send them there for testing, but the results were unqualified. You will ask a liar how to make money. They sold 8000 spare parts and agreed to assemble and recycle 10000. In fact, the market price of those pieces is about 2000-3000. Then refuse to recycle, and the liar will make money.
This estimate is unreliable.