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300275 CHONGQING MAS SCI.&TECH.CO., LTD.梅安森Shenzhen Stock Exchange

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CHONGQING MAS SCI.&TECH.CO., LTD. (300275) at a glance

Code
300275
Company
CHONGQING MAS SCI.&TECH.CO., LTD.
Local name
梅安森
Market
Shenzhen Stock Exchange
Share price
CN¥8.20 -0.18 (-2.15%) Nov 6 close

Prices are from Yahoo! Finance and may be delayed. Always check the latest price before trading.

CHONGQING MAS SCI.&TECH.CO., LTD. (300275) Stock Price History

CHONGQING MAS SCI.&TECH.CO., LTD. closed at CN¥8.20 on Nov 6, 2026, −7.4% over 1 month, −40.2% over 1 year.

2026-10-30 四半期報告 2026年三季度报告 / 取締役会決議 第六届董事会第十六次会议决议公告CN¥8.89CN¥8.11Oct 8Nov 6
Price5-day MA25-day MASSE CompositeDisclosures
1-Month HighCN¥8.89Oct 9
1-Month LowCN¥8.11Oct 30
1-Week Change+1.1%vs Oct 30
1-Month Change−7.4%vs Sep 30

If you had invested CN¥10,000 1 month ago, it would be worth CN¥9,308 today (−6.9%).Price change only; dividends and fees are not included.

Over the same period the SSE Composite moved −4.3%, while this stock moved −6.9%.

Last 10 Trading Days

DateCloseChange% Change
Nov 6 (Fri)CN¥8.20−0.18−2.15%
Nov 5 (Thu)CN¥8.38+0.13+1.58%
Nov 4 (Wed)CN¥8.25+0.00+0.00%
Nov 3 (Tue)CN¥8.25−0.02−0.24%
Nov 2 (Mon)CN¥8.27+0.16+1.97%
Oct 30 (Fri)CN¥8.11−0.08−0.98%
Oct 29 (Thu)CN¥8.19−0.20−2.38%
Oct 28 (Wed)CN¥8.39+0.21+2.57%
Oct 27 (Tue)CN¥8.18−0.33−3.88%
Oct 26 (Mon)CN¥8.51−0.11−1.28%
2026-09-15 大量保有の変動 简式权益变动报告书（东海控股） / 大量保有の変動 关于股东协议转让部分股份暨权益变动的提示性公告2026-09-18 決算説明会 关于参加重庆辖区2026年投资者网上集体接待日暨半年度业绩说明会活动的公…2026-10-30 四半期報告 2026年三季度报告 / 取締役会決議 第六届董事会第十六次会议决议公告CN¥9.30CN¥8.11Aug 6Nov 6
Price5-day MA25-day MASSE CompositeDisclosures
3-Month HighCN¥9.30Sep 1
3-Month LowCN¥8.11Oct 30
1-Month Change−7.4%vs Sep 30
3-Month Change−5.3%vs Aug 6

If you had invested CN¥10,000 3 months ago, it would be worth CN¥9,469 today (−5.3%).Price change only; dividends and fees are not included.

Over the same period the SSE Composite moved −6.4%, while this stock moved −5.3%.

Last 10 Trading Days

DateCloseChange% Change
Nov 6 (Fri)CN¥8.20−0.18−2.15%
Nov 5 (Thu)CN¥8.38+0.13+1.58%
Nov 4 (Wed)CN¥8.25+0.00+0.00%
Nov 3 (Tue)CN¥8.25−0.02−0.24%
Nov 2 (Mon)CN¥8.27+0.16+1.97%
Oct 30 (Fri)CN¥8.11−0.08−0.98%
Oct 29 (Thu)CN¥8.19−0.20−2.38%
Oct 28 (Wed)CN¥8.39+0.21+2.57%
Oct 27 (Tue)CN¥8.18−0.33−3.88%
Oct 26 (Mon)CN¥8.51−0.11−1.28%
2026-09-15 大量保有の変動 简式权益变动报告书（东海控股） / 大量保有の変動 关于股东协议转让部分股份暨权益变动的提示性公告2026-09-18 決算説明会 关于参加重庆辖区2026年投资者网上集体接待日暨半年度业绩说明会活动的公…2026-10-30 四半期報告 2026年三季度报告 / 取締役会決議 第六届董事会第十六次会议决议公告CN¥11.70CN¥7.47May 6Nov 6
Price25-day MA75-day MASSE CompositeDisclosures
6-Month HighCN¥11.70May 25
6-Month LowCN¥7.47Jul 22
3-Month Change−5.3%vs Aug 6
6-Month Change−28.6%vs May 6

If you had invested CN¥10,000 6 months ago, it would be worth CN¥7,143 today (−28.6%).Price change only; dividends and fees are not included.

Over the same period the SSE Composite moved −12.3%, while this stock moved −28.6%.

Monthly Closes

MonthMonth-End CloseMonthly %
Nov 2026CN¥8.20+1.1%
Oct 2026CN¥8.11−8.5%
Sep 2026CN¥8.86−3.7%
Aug 2026CN¥9.20+11.7%
Jul 2026CN¥8.24+2.6%
Jun 2026CN¥8.03−16.6%
May 2026CN¥9.63−15.5%
2026-09-15 大量保有の変動 简式权益变动报告书（东海控股） / 大量保有の変動 关于股东协议转让部分股份暨权益变动的提示性公告2026-09-18 決算説明会 关于参加重庆辖区2026年投资者网上集体接待日暨半年度业绩说明会活动的公…2026-10-30 四半期報告 2026年三季度报告 / 取締役会決議 第六届董事会第十六次会议决议公告CN¥14.52CN¥7.47Nov 6Nov 6
Price25-day MA75-day MASSE CompositeDisclosures
52-Week HighCN¥14.52Jan 12
52-Week LowCN¥7.47Jul 22
Year to Date−38.4%vs Dec 31
From 52-Week High−43.5%Jan 12

If you had invested CN¥10,000 1 year ago, it would be worth CN¥5,981 today (−40.2%).Price change only; dividends and fees are not included.

Over the same period the SSE Composite moved −8.9%, while this stock moved −40.2%.

Monthly Closes

MonthMonth-End CloseMonthly %
Nov 2026CN¥8.20+1.1%
Oct 2026CN¥8.11−8.5%
Sep 2026CN¥8.86−3.7%
Aug 2026CN¥9.20+11.7%
Jul 2026CN¥8.24+2.6%
Jun 2026CN¥8.03−16.6%
May 2026CN¥9.63−15.5%
Apr 2026CN¥11.39+4.6%
Mar 2026CN¥10.89−15.5%
Feb 2026CN¥12.89−2.2%
Jan 2026CN¥13.18−1.0%
Dec 2025CN¥13.31−0.4%
Nov 2025CN¥13.36+8.4%
CN¥17.61CN¥7.47Nov 6, 2023Nov 6, 2026
Price13-week MA26-week MASSE Composite
3-Year HighCN¥17.61Mar 3, 2025
3-Year LowCN¥7.47Feb 5, 2024
Annualized Return−13.4%
Max Drawdown−57.5%

If you had invested CN¥10,000 3 years ago, it would be worth CN¥6,487 today (−35.1%).Price change only; dividends and fees are not included.

Over the same period the SSE Composite moved +20.1%, while this stock moved −35.1%.

Yearly Closes

YearYear-End CloseYearly %
2026 (YTD)CN¥8.20−38.4%
2025CN¥13.31―
CN¥17.61CN¥6.65Nov 8, 2021Nov 6, 2026
Price13-week MA26-week MASSE Composite
5-Year HighCN¥17.61Mar 3, 2025
5-Year LowCN¥6.65Nov 8, 2021
Annualized Return+4.3%
Max Drawdown−57.5%

If you had invested CN¥10,000 5 years ago, it would be worth CN¥12,331 today (+23.3%).Price change only; dividends and fees are not included.

Over the same period the SSE Composite moved +3.1%, while this stock moved +23.3%.

Yearly Closes

YearYear-End CloseYearly %
2026 (YTD)CN¥8.20−38.4%
2025CN¥13.31―
CN¥22.75CN¥4.41Dec 1, 2011Nov 6, 2026
Price1-year MA2-year MASSE Composite
All-Time HighCN¥22.75Dec 2015
All-Time LowCN¥4.41Jan 2019
Total Change+6.2%vs Dec 2011
Annualized Return+0.4%

If you had invested CN¥10,000 in Dec 2011, it would be worth CN¥10,618 today (+6.2%).Price change only; dividends and fees are not included.

Over the same period the SSE Composite moved +65.9%, while this stock moved +6.2%.

Yearly Closes

YearYear-End CloseYearly %
2026 (YTD)CN¥8.20−38.4%
2025CN¥13.31−9.5%
2024CN¥14.70+27.5%
2023CN¥11.53+56.2%
2022CN¥7.38+2.9%
2021CN¥7.18+14.8%
2020CN¥6.25−19.2%
2019CN¥7.74+64.2%
2018CN¥4.71−46.5%
2017CN¥8.81−35.6%
2016CN¥13.68−39.9%
2015CN¥22.75+141.5%
2014CN¥9.42+3.0%
2013CN¥9.14+10.4%
2012CN¥8.28+7.2%
2011CN¥7.72―

Daily, weekly and monthly closes (Yahoo! Finance, split-adjusted, dividends excluded). "All" covers the range Yahoo provides (from Dec 2011). Please check the latest prices before trading.

Posts

This board is shared with the Japanese and Chinese versions. Feel free to write in English, Chinese or Japanese.

No.5 Disclosure 2026/10/30 09:00
取締役会決議
第六届董事会第十六次会议决议公告

📄 Open the filing

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No.4 Disclosure 2026/10/30 09:00
四半期報告
2026年三季度报告

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Delete
No.3 Disclosure 2026/09/18 09:00
決算説明会
关于参加重庆辖区2026年投资者网上集体接待日暨半年度业绩说明会活动的公告

📄 Open the filing

Delete
No.2 Disclosure 2026/09/15 09:00
大量保有の変動
关于股东协议转让部分股份暨权益变动的提示性公告

📄 Open the filing

Delete
No.1 Disclosure 2026/09/15 09:00
大量保有の変動
简式权益变动报告书（东海控股）

📄 Open the filing

Delete

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