Gold recovery from old cd player 

Thanks very useful work 🙏🙏 I have one question Which grade is use of SMB (industrial, tactical, food grade

Good videos, thank You, and Happy New Year!👍🤩👍

What is the function of giving H2SO4 in the first step, sir?

Good information 👍 👌

Good information 🙏👍👍

beautiful job sir Happy New Year

Bhot achcha kaam krte hai sir

Sir please make video on how to extract platinum from spark plugs

Good job sir....💞 Is zinc also recover .....?

Please safety first 🫣 without gloves 🧤

nice little gold bead

Ketla gram thyu

Sir g stone sy gold kaisey nikly ga?plz help

Hi sir.nice video.these boards are known as chip boards.the price is 350 per kg.what is the average of these boards.can its profitable to work on these boards.happy new year sir

You still had way too much free nitric, that's why the smb went brown when you added it

Sar mujhe nitrec acid 60% prches karna h online to nahi kese kharide

Good 👌👍👍

G00d

Gloves?

Can use industrial urea?

Sir pls number

Sir g stone sy gold kaisey nikly ga?plz help