Do I have to purchase standard packing box from the post office? Or it's acceptable to use my own; Polycarbonate Hard case Luggage 79 x 56 x 31cm; via SAL from China Chongqing to Singapore. Content: D-I-Y drone parts & accessories, one Drone Radio remote controller, Empty soft case for drone H480 and my belongings and attires. No illegal or prohibit items. Total weight 33kg. What is the cost and time frame?

Dear Ladies and Gentelman,
my package got stuck at the post office in Ghanzou or CNCANA (longer than 1 Month) due to missing proof of value. But I had the proof of value from banggood in the package. But if that doesn't work, can you please send my package back to me. Its very important for me it was a expensive Drone. I dont want to lose the Drone. Please help me. I need your help. Please sent the paket back to me.
Tracking Number CA447031205AT

I bought a drone on wish, and i got a weird tracking number:
US566959851CN
I would like to know if this kind of shipment alloud you to send a drone like that? it's not a small packet, it's with a suitcase and everything, product of 130USD, I mean, this kind of shipment is not for only limited sizes os packages with low cost? or you cand send wharever you want with this China Post Ordinary Packet?
It must have this information : Package weight: 1.4810 kg
Package size (L x W x H): 36.50 x 16.00 x 27.00 cm / 14.37 x 6.3 x 10.63 inches

Is it alloud to send it by this China Post Ordinary Packet?