Nws xav tau ntau yam tshuaj ua tiav thiab kho tshuab los ntawm cov tawv nqaij tawv kom tiav cov tawv nqaij, feem ntau yuav tsum dhau 30-50 cov txheej txheem ua haujlwm.Feem ntau muab faib ua plaub theem: kev npaj rau tanning, tanning txheej txheem, ntub txheej txheem tom qab tanning thiab ziab & tiav txheej txheem.
A. Nyuj Khau Khau Upper Tawv Txheej Txheem
Raw Hides: Salted Cow Hides
1. Kev Npaj Rau Tanning
Pab pawg → Nyhav → Pre-Soaking → Fleshing → Main-Soaking → Nyhav → Liming → Fleshing → Split Neck
2. Txheej txheem tanning
Qhov hnyav → Ntxuav → Deliming → Softening → Pickling → Chrome Tanning → Stacking
3. Cov txheej txheem ntub dej tom qab tanning
Xaiv & Pab pawg → Sammying → Spliting → Shaving → Trimming → Weighing → Ntxuav → Chrome Re-Tanning → Neutralizing → Re-Tanning → Dyeing & Fat Liquoring → Ntxuav → Stacking
4. Kev ziab & ua tiav
Teem tawm → Nqus kom qhuav → Stewing → Hang Drying → Wetting Back → Staking → Milling → Toggling Drying → Trimming → Xaiv
(1) Puv-grain khau Upper Tawv:Ntxuav → Txheej → Ironing → Classification → Measuring → Storage
(2) Kho Upper Tawv:Buffing → Dedusting → Dry filling → Hang Drying → Staking → Selecting → Buffing → Dedusting → Ironing → Coating → Embossing → Ironing → Classifying → Measuring → Storage
B. Tshis Khaub Ncaws Tawv
Raw Hides: tshis tawv
1. Kev Npaj Rau Tanning
Kev sib koom ua ke → Nyhav → Pre-Soaking → Fleshing → Main-Soaking → Fleshing → Stacking → Painting With Txiv qaub → Stewing → Liming → Washing-Fleshing → Cleaning → Split Ceck → Washing → Reliming → Washing
2. Txheej txheem tanning
Qhov hnyav → Ntxuav → Deliming → Softening → Pickling → Chrome Tanning → Stacking
3. Cov txheej txheem ntub dej tom qab tanning
Xaiv & Pab pawg → Sammying → Shaving → Trimming → Nyhav → Ntxuav → Chrome Re-Tanning → Ntxuav-Neutralizing → Re-Tanning → Dyeing & Fat Liquoring → Ntxuav → Stacking
4. Kev ziab & ua tiav
Teem caij → Hang Drying → Wetting Back → Staking → Milling → Toggling Drying → Trimming → Cleaning → Coating → Ironing → Classifying → Measuring → Storage
