Nyias tsis ruaj rau cov kav hlau, uas tau tsuas tsim thiab siv nyob rau Suav teb thaum xyoo 1990, yog cov neeg tuaj tshiab hauv cov khoom siv yeeb nkab, thiab tau siv cov dej loj los tsim dej thiab dej haus.
Lub yeeb yaj kiab uas muaj hlau tsis txhuam hauv cov cav hlau tau pom zoo los ntawm cov neeg ua haujlwm engineering, thiab cov tog neeg feem ntau pib txo cov phab ntsa thiab txo nqi kom thiaj li pab txhawb ntxiv. Nyob rau hauv kev, qhov me me-kab stainless steel yeeb nkab tsis kim, yog li txoj kev txhawb nqa txoj kev txuas, kev cia siab thiab nqi ntawm cov yeeb nkab fittings yog lub ntsiab tseem ceeb uas txiav txim xyuas nws txoj kev loj hlob. Domestically, nyob rau hauv Sichuan, Guangdong, Zhejiang, Jiangsu thiab lwm qhov chaw, neeg tsim khoom tsim ntawm nws tus kheej tsim kev twb kev txuas siv tshuab thiab yeeb nkab fittings, uas yog ib raj yeeb nkab. Lub tuam tsev kev tsim kho thiab cov tuam tsev muaj feem xyuam kuj tseem ceeb heev rau qhov tshiab ntawm cov yeeb nkab. Raws li lub Tuam Tshoj Technology Market Promotion Center thiab National Science thiab Technology [2001] No. 71 daim ntawv teev lus, kev nce qib thiab kev siv ntawm "high-diameter wall ratio high-precision stainless hlau nruab nrab thiab qib siab siab tu kav thiab khoom txhawb "Nyob rau hauv tsab ntawv ceeb toom ntawm yeeb nkab fittings thiab tshwj xeeb technology, nws yog paub tias lub nce thiab daim ntawv thov ntawm thin-walled stainless hlau yeeb tshuab thiab cov khoom yog ntawm zoo tseem ceeb rau kev txhim kho qib ntawm cov niaj hnub suav vaj tse thiab kev txhim kho thiab guaranteeing dej zoo ntawm cov dej khoom noj.
Nyob rau tib lub sij hawm, Ministry of Construction attaches kuj zoo kawg thiab tseem ceeb rau kev nce qib thiab daim ntawv thov ntawm thin-walled stainless hlau kav. Kev lag luam tsim rau cov Nyias Ntsuas Phab Ntsa Cov Hlau Hauv Cov Hlau Dej tau tso tawm rau xyoo 2001. Cov khoom siv dej taws hauv kev tsim kev tswj thiab kev atlas hauv installation, Ministry of Construction tau muab ntaub ntawv, tab tom npaj los ntawm Tongji University. Thaum tam sim no, Sichuan, Guangdong, Zhejiang, Jiangsu thiab lwm qhov chaw muaj kev lag luam tsim cov khoom tsim nyias cov hlua khi hlau, thiab cov khoom muaj matured. Yog li ntawd, lub sijhawm tau los txhawb thiab siv.