| Standard No. |
Title |
Price(USD) |
Delivery |
Status |
Add To Cart |
| GB 11887-2002 |
Jewellery--Fineness of precious metal alloys and designation |
|
via email in
1-3 business day
|
ABOLISHED
|
please email coc@codeofchina.com for quotation
|
| GB/T 33541-2017 |
Qualified judgement criteria of sampling inspectionfor gems and precious metal products |
 (USD) |
via email in
1-3 business day
|
VALID
|
|
| GB 28480-2012 |
Adornment—Provision for limit of baneful elements |
 (USD) |
via email in
1-3 business day
|
VALID
|
|
| GB/T 34545-2017 |
|
 (USD) |
via email in
1-3 business day
|
VALID
|
|
| QB/T 4113-2010 |
|
|
via email in
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB/T 16552-2017 |
Gems—Nomenclature |
 (USD) |
via email in
1-3 business day
|
VALID
|
|
| GB/T 28021-2011 |
Adornment—Determination of baneful elements—Method of spectrometry |
 (USD) |
via email in
1-3 business day
|
VALID
|
|
| GB/T 31432-2015 |
Dushan Yu—Denomination and lassification |
 (USD) |
via email in
1-3 business day
|
VALID
|
|
| GB/T 21198.5-2007 |
Determination of precious metals in precious metals jewellery alloys—Method using ICP spectrometry—Part 5:999‰ silver jewellery alloys—Determination of silver—Difference method |
 (USD) |
via email in
1-3 business day
|
ABOLISHED
|
|
| GB/T 36169-2018 |
Turquoise—Grading |
 (USD) |
via email in
1-3 business day
|
VALID
|
|
| GB/T 38161-2019 |
Palladium jewellery alloys—Determination of palladium—Inductively coupled plasma(ICP)spectrometric method using yttrium as internal standard element |
 (USD) |
via email in
1-3 business day
|
VALID
|
|
| QB/T 2995-2008 |
Silver foil |
 (USD) |
via email in
1-3 business day
|
VALID
|
|
| QB/T 4188-2011 |
Precious metal alloy coatings jewellery--General technical requirements of plating |
|
via email in
|
VALID
|
please email coc@codeofchina.com for quotation
|
| DB37/T 2949-2017 |
Evaluation for the Shandong Sapphire |
|
via email in
|
VALID
|
please email coc@codeofchina.com for quotation
|
| QB/T 4186-2011 |
Precious metal alloy coatings jewellery--General technical requirements of casting |
|
via email in
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB/T 21198.4-2007 |
Determination of precious metals in precious metals jewellery alloys—Method using ICP spectrometry—Part 4:999‰precious metals jewellery alloys—Determination of precious metals—Difference method |
 (USD) |
via email in
1-3 business day
|
ABOLISHED
|
|
| QB/T 4185-2011 |
Jewellery with Cu-Sn alloy coating |
 (USD) |
via email in
1-3 business day
|
VALID
|
|
| GB/T 18303-2008 |
Color grading of polished diamond by visual matching |
 (USD) |
via email in
1-3 business day
|
VALID
|
|
| GB/T 18996-2003 |
Determination of silver in silver jewellery alloys--Volumertic (potentiometric) method using sodium chloride or potassium chloride |
|
via email in
1-3 business day
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB/T 18303-2001 |
Colour grading of polished diamond by visual matching |
 (USD) |
via email in
1-3 business day
|
ABOLISHED
|
|
|
|
