What were the "high technologies" in ancient China?

Ancient China's high-tech: paper, printing, textile, ceramics, casting and metallurgy, etc.

Ceramics is the collective name for pottery and porcelain.

Ceramics is the pottery and porcelain, but also a kind of arts and crafts, as far back as the Neolithic era, China has a rough, simple style of colored pottery and black pottery. Pottery and porcelain have different textures and different properties.

Tao, is a high viscosity, plasticity of clay as the main raw material made of opaque, with fine pores and weak water absorption, hit the sound turbid. Porcelain is made of clay, feldspar and quartz, translucent, non-absorbent, corrosion-resistant, hard and compact tire, knocking sound brittle. China's traditional ceramic arts and crafts, high quality and beautiful shape, with high artistic value, known around the world.

Classification:

Ceramic materials are not yet a unified classification method, usually divided into glass, glass ceramics and engineering ceramics 3 categories. Which engineering ceramics are divided into two categories of ordinary ceramics and special ceramics. One of the ordinary ceramics, also known as traditional ceramics, special ceramics, also known as modern ceramics.

Ceramic materials are made of natural or synthetic compounds after molding and high temperature sintering of a class of inorganic non-metallic materials. Has a high melting point, high hardness, high wear resistance, oxidation resistance and other advantages. Can be used as structural materials, cutting tool materials and mold materials, because ceramics also have some special properties, and can be used as functional materials.