From raw material to finished product ,there are 15 working procedures .Each working procedure quality inspection according to the standard inspection ,to ensure each product of BKK in perfect .

Strength Test

Every batch of product in production process have to past at       least 3 times tension testing , they are tension after quenching  tempering, tension testing after chemical polishing, tension       testing after plating.To ensure the variant strain values of every batch of products within same standard data.

Anti-rust Test 

Point at the fresh water and sea water anti-rust standard test , each style products must pass the international standard of saltwater test before selling to market .