Comment by adithyareddy

You're not wrong, but this is the economic and industrial strategy model for how countries build complex manufacturing capabilities from scratch.

Almost every major manufacturing powerhouse (e.g. Japan in the 50s-70s and China in the 80s-2000s) started as a low-value-add assembler relying on foreign intermediate inputs. You have to get your foot in the door somewhere, and then expand how much of the chain you're in. If you wait till you can manufacture 100% of a sodium-ion cell, it'll never happen.

You need downstream demand first to justify upstream capital expenditure. No private investor will build an electrolyte facility in North America or India if there's zero operation battery cell factories down the street to buy their output.

By starting with cell assembly (even if you're relying on imported Chinese precursor materials), you're creating an anchor customer for future domestic chemical and material suppliers, the human capital of engineers, technicians, and supply chain managers who understand battery logistics and manufacturing operations on the ground, and physical infrastructure that makes the rest of the industry financially viable.

India with mobile phone manufacturing for example went from screwdriver assembly ("screwdriving" pre-assembled kits imported from China) in 2014 with 2-5% domestic value addition, to now being at 30-35% domestic value addition. Things like plastic injection molding, metal frames, packaging, and PCB surface mounting, are localized.

There's a risk of getting stuck in assembly without expanding, but you have to start somewhere. You can't sit on the sidelines and expect an entire ecosystem to magically appear out of nowhere. Moving step by step is the only pragmatic thing you can do.