Eating is the basic thing to sustain life, but human being has upgraded this skill, through seasoning and we have sour, sweet, bitter, spicy, salty tastes, different colours, scents, flavours, and these made us not only to sustain our lives, but give more body and flavours to our food. Makes eating more interesting.

Different sauces with different formulae, and the containers need to be selected carefully, some need the darker bottles, some need to be acid and alkali-resistance, and some need thicker bottle wall. Surely the sauce formulae are secrets, and the bottle-making is not a secret, but only the accumulation of experience and professionalism over the years.

I agree