@nanomania Sounds like a possible business opportunity for you here. Companies like Fishman Chemical, NFP, Fish Remedies LLC, New Life Spectrum, etc. are sourcing their CP from China, and the end user often has mixed results due to purity. So, if a company in India can do better then maybe they deserve to be the "go-to place" to get CP from - whether they sell direct to the public or act as a wholesaler.
The issue here is purity. In order for CP to be effective against external parasites, it needs to be
99% pure! I cannot stress that enough; 98% pure just ain't gonna cut it. The 1% binder also needs to be food grade, safe for human consumption, and thus safe for aquarium use.
The Co. in India would need to provide a
Certificate of Analysis for
each & every batch of CP produced. I would also feel better about it if CP for aquarium use was somehow regulated through the FDA. So, they could do random analysis checks on product being imported into the country.