Xov xwm
-
Precious Metals Group tau ua tiav lub 2023 Yunnan Province Industry Leading Talents Advanced Training Program
Tsis ntev los no, "2023 Yunnan Province Industrial Leading Talents Advanced Training Course" tau ua tiav hauv Hangzhou, tuav los ntawm Yunnan Provincial Department of Human Resources thiab Social Security thiab tuav los ntawm Precious Metals Group. Ntawm qhov qhib ceremony, Human Res ...Nyeem ntxiv -
Kev siv ntau yam ntawm graphite
Graphite yog cov ntxhia ntau heev nrog ntau lub cev thiab tshuaj lom neeg tshwj xeeb, ua rau nws siv dav hauv ntau qhov chaw. Kab lus no yuav qhia txog ntau yam kev siv graphite. 1, Daim ntawv thov ntawm graphite hauv xaum Graphite yog siv los ua cov khoom tseem ceeb ntawm cov hlau lead hauv xaum. Lub softness yog ...Nyeem ntxiv -
Dao Fu Ntiaj Teb: Kub tseem muaj lub zog txaus kom mus txog qhov keeb kwm siab hauv 2024
Ib tus kws tshaj lij kev lag luam tau hais tias cov teeb liab los ntawm Tsoom Fwv Teb Chaws Reserve tias cov paj laum yuav raug txo qis hauv 2024 tau tsim qee qhov kev noj qab haus huv rau lub lag luam kub, uas yuav ua rau cov nqi kub nce mus txog keeb kwm siab hauv xyoo tshiab. George Milling Stanley, Tus Thawj Saib Xyuas Kub Kub ntawm Dow Jones ...Nyeem ntxiv -
Dab tsi yog hom tshuab casting
1, Taw qhia Lub tshuab casting yog cov cuab yeej siv los tsim cov hlau castings hauv kev tsim khoom. Nws tuaj yeem txhaj cov hlau molten rau hauv pwm thiab tau txais qhov xav tau casting zoo los ntawm cov txheej txheem txias thiab solidification. Nyob rau hauv txoj kev loj hlob ntawm cov tshuab casting, txawv ...Nyeem ntxiv -
Precious hlau lag luam diverged
Lub lim tiam dhau los (Lub Kaum Ib Hlis 20 txog Lub Kaum Ib Hlis 24), tus nqi sib txawv ntawm cov hlau muaj txiaj ntsig sib txawv, suav nrog cov nyiaj thiab cov platinum cov nqi txuas ntxiv nce, thiab cov nqi palladium oscillated ntawm qis qis. Nyob rau hauv cov ntaub ntawv ntawm kev lag luam, qhov ua ntej US manufacturing purchasing managers 'index (PMI) ...Nyeem ntxiv -
Classification txoj kev rau cov hniav nyiaj hniav kub ua khoom
Nws tuaj yeem muab faib ua: 1. Muab faib los ntawm kev ua haujlwm (1) Kev sib tsoo tshuab - khoom siv rau polishing thiab carving gemstones. (2) Ntug txiav tshuab - ib qho cuab yeej siv los txiav cov npoo ntawm pob zeb. (3) Cov cuab yeej Embedding - lub tshuab siv los ntxig cov pob zeb diamond thiab lwm yam xim pob zeb ...Nyeem ntxiv -
Dab tsi yog cov khoom siv ua cov hniav nyiaj hniav kub muaj?
(1) Polishing machinery: suav nrog ntau hom kev sib tsoo log polishing tshuab thiab disc polishing electroplating tshuab. (2) Tu tshuab (xws li sandblasting): nruab nrog lub tshuab ntxhua khaub ncaws ultrasonic; Jet air flow scrubber, thiab lwm yam. (3) Tshuab ziab khaub ncaws: Feem ntau yog ob ...Nyeem ntxiv -
Qhov txawv ntawm forging thiab casting?
Forging yog cov txheej txheem ntawm kev ua cov hlau tsis tshua muaj hlau ingots (billets) rau hauv qhov chaw ntxhib nrog cov duab thiab loj siv cov txheej txheem xws li hlau melting, dov, lossis dov. Castings yog ib lo lus dav dav rau cov khoom siv cam khwb cia siv cov xuab zeb pwm lossis lwm txoj hauv kev; Nws yog ib yam khoom ua los ntawm ntau yam ...Nyeem ntxiv -
Dab tsi yog qhov txawv ntawm Zuojin 999 thiab Zuojin 9999?
Zujin 999 thiab Zujin 9999 yog ob yam khoom siv kub purity sib txawv. Qhov sib txawv ntawm lawv yog nyob rau hauv purity ntawm kub. 1. Zujin 999: Zujin 999 hais txog qhov purity ntawm cov ntaub ntawv kub ncav cuag 99.9% (tseem hu ua 999 qhov chaw ib txhiab). Qhov no sawv cev tias cov khoom kub muaj tsawg heev ...Nyeem ntxiv -
Hongkong jewellery thiab lub pov haum exhibition
Lub 2023 Hong Kong Jewellery Gem Fair, tsim los ntawm Infirman Exhibition Group, yuav muaj ob zaug ib xyoos rau 16 Cuaj hlis 2022, lub exhibition yuav muaj nyob rau ntawm Hong Kong Convention thiab Exhibition Center, 1 Expo Drive, Wan Chai, Taiwan, Suav teb. Qhov chaw ua yeeb yam yuav tsum ncav cuag 135,000 square ...Nyeem ntxiv -
Kev lag luam hlau thiab cov khoom siv hlau tshiab: Txuas ntxiv mus saib kub
Lub hauv paus hlau: Kev txiav RRR hauv tsev txhawb kev ntseeg siab, thiab tus nqi ntawm cov hlau hauv paus yuav tsum hloov pauv mus. Raws li Cua, txij lub Cuaj Hlis 11 txog Lub Cuaj Hli 15, LME tooj liab, txhuas, txhuas, zinc, tin nqi hloov los ntawm 2.17%, 0.69%, 1.71%, 3.07%, 1.45%. Txawv teb chaws, raws li Cua, Teb Chaws Asmeskas ...Nyeem ntxiv -
Dab tsi yog cov txheej txheem kub rho tawm
1. Kev sib cais ntawm nitric acid kom rho tawm kub qhov kev sib cais ntawm nitric acid yuav siv tau, concentrated nitric acid rau hauv beakers, yuav tsum tau rho kub rau hauv cov hlau mus rau hauv beakers. Lub Beaker ces muab tso rau ntawm lub beaker tuav thiab rhuab nrog ib tug cawv teeb los tsim flaky kub. 2. Aqua reg...Nyeem ntxiv
