Logistics services

We have a batch of chemical products urgently needing export, but the cargo transportation condition appraisal certificate from the Shanghai Chemical Industry Institute (based on the 2014 standards) hasn't been issued yet. The freight forwarder said we can't book a shipping slot without this certificate. Could you please tell me if we can still book a ship in this situation? Are there any workarounds?

We just started exporting domestically produced products, but we have no clue about logistics at all. We'd like to ask the experts for advice: From picking up goods from domestic warehouses, to customs declaration, and finally to international transportation, what are the key points we need to pay attention to throughout the entire process? We're most concerned about potential compliance issues or uncontrollable logistics costs.

We have a batch of urgent goods to be imported from Germany by express delivery, and plan to first send them to Hong Kong for the agent to assist with customs clearance and forwarding. In this case, is it necessary to issue a power of attorney to the Hong Kong agent? What specific type of power of attorney is required? Are there any hidden risks involved?

Emergency help! A batch of mechanical parts we sent to our Peruvian client has been stuck at Callao Port for nearly a month due to the client's clearance failure. The client has explicitly stated that they cannot clear customs and wants the goods to be returned. The freight forwarder said the return shipping fee might exceed the value of the goods. This is our first time dealing with return shipments to South America, and we're worried about customs auctions and the client refusing to pay. How can we handle this step by step to minimize losses? The situation is urgent!