---
title: "Changzhou Langbo Sealing Technologies Co.,Ltd. (603655.SH)"
type: "Symbol"
locale: "en"
url: "https://longbridge.com/en/quote/603655.SH.md"
symbol: "603655.SH"
name: "Changzhou Langbo Sealing Technologies Co.,Ltd."
industry: "Tires and Rubber"
datetime: "2026-06-13T13:14:20.637Z"
locales:
  - [en](https://longbridge.com/en/quote/603655.SH.md)
  - [zh-CN](https://longbridge.com/zh-CN/quote/603655.SH.md)
  - [zh-HK](https://longbridge.com/zh-HK/quote/603655.SH.md)
---

# Changzhou Langbo Sealing Technologies Co.,Ltd. (603655.SH)

## Company Overview

Changzhou Langbo Sealing Technologies Co.,Ltd. researches and develops, designs, produces, and sells precision seals, rubber and plastic products, metal processing parts, and precision cavity molds in China. The company provides auto turbo tubes, automotive fuel system seals, auto gearbox fuel tank, automobile engine oil seals, automobile brake system rubber parts, automotive brake booster rubber parts, automotive lamp system rubber parts, automobile power steering system rubber parts, automotive brake master cylinder seals, automotive air conditioning rubber parts, and automotive air conditioning seal parts. It also provides railway sleeper pads, bogie system elastic positioning sleeves, and motor air duct rubber parts; engineering machinery rubber products; and aviation series rubber products.

| Item | Detail |
|------|--------|
| Industry | Tires and Rubber |
| Exchange | CN Market |
| Website | [www.jmp-seal.com](https://www.jmp-seal.com) |

## Key Drivers
> *AI-analyzed key factors driving this stock's performance*


## Longbridge Financial Score™: B
> *Longbridge Financial Score™ — Proprietary multi-factor rating model by Longbridge*
> Updated: 2026-06-13T04:30:10.000Z

**Overall: B (0.35)**

**Industry**: Tires and Rubber

| Metric | Value |
|--------|-------|
| Industry Ranking | 5 / 14 |
| Industry Median | C |
| Industry Average | C |

- **Style**: Blend - Stocks in which the company has both growth and mature businesses.
- **Scale**: Small - The company's operation has a high degree of growth and volatility, making it easy to achieve high investment returns.

**Multi Score**: B

#### Style Score Score: 

| Indicator | Value | Rating |
|-----------|-------|--------|
| Revenue YoY | 9.01% |  |
| Net Profit YoY | 30.45% |  |
| P/B Ratio | 6.09 |  |
| Dividend Ratio | 0.27% |  |

#### Size Score Score: 

| Indicator | Value | Rating |
|-----------|-------|--------|
| Market Cap | 3510074388.10 |  |
| Revenue | 267173887.69 |  |

#### Multi Score Score: B

| Indicator | Value | Rating |
|-----------|-------|--------|
| ROE | 7.65% | B |
| Profit Margin | 16.16% | A |
| Gross Margin | 36.63% | B |
| Revenue YoY | 9.01% | B |
| Net Profit YoY | 30.45% | B |
| Total Assets YoY | 3.30% | C |
| Net Assets YoY | 4.20% | C |
| Cash Flow Margin | 87.53% | C |
| OCF YoY | 9.01% | B |
| Turnover | 0.44 | C |
| Gearing Ratio | 5.69% | A |

```chart-data:radar
{
  "title": "Longbridge Financial Score - Changzhou Langbo Sealing Technologies Co.,Ltd.",
  "chart_type": "radar",
  "dimensions": [
    {
      "name": "Style Score",
      "grade": "",
      "indicators": [
        {
          "name": "Revenue YoY",
          "value": "9.01%",
          "rating": ""
        },
        {
          "name": "Net Profit YoY",
          "value": "30.45%",
          "rating": ""
        },
        {
          "name": "P/B Ratio",
          "value": "6.09",
          "rating": ""
        },
        {
          "name": "Dividend Ratio",
          "value": "0.27%",
          "rating": ""
        }
      ]
    },
    {
      "name": "Size Score",
      "grade": "",
      "indicators": [
        {
          "name": "Market Cap",
          "value": "3510074388.10",
          "rating": ""
        },
        {
          "name": "Revenue",
          "value": "267173887.69",
          "rating": ""
        }
      ]
    },
    {
      "name": "Multi Score",
      "grade": "B",
      "indicators": [
        {
          "name": "ROE",
          "value": "7.65%",
          "rating": "B"
        },
        {
          "name": "Profit Margin",
          "value": "16.16%",
          "rating": "A"
        },
        {
          "name": "Gross Margin",
          "value": "36.63%",
          "rating": "B"
        },
        {
          "name": "Revenue YoY",
          "value": "9.01%",
          "rating": "B"
        },
        {
          "name": "Net Profit YoY",
          "value": "30.45%",
          "rating": "B"
        },
        {
          "name": "Total Assets YoY",
          "value": "3.30%",
          "rating": "C"
        },
        {
          "name": "Net Assets YoY",
          "value": "4.20%",
          "rating": "C"
        },
        {
          "name": "Cash Flow Margin",
          "value": "87.53%",
          "rating": "C"
        },
        {
          "name": "OCF YoY",
          "value": "9.01%",
          "rating": "B"
        },
        {
          "name": "Turnover",
          "value": "0.44",
          "rating": "C"
        },
        {
          "name": "Gearing Ratio",
          "value": "5.69%",
          "rating": "A"
        }
      ]
    }
  ]
}
```

## Valuation Analysis

| Metric | Current | Industry Ranking | High | Median | Low |
|--------|---------|-----------------|------|--------|-----|
| PE (TTM) | 81.29 | 12/14 | 110.10 | 102.10 | 95.00 |
| PB | 6.09 | 14/14 | 7.87 | 7.20 | 6.69 |
| PS (TTM) | 13.14 | 14/14 | 16.75 | 15.48 | 14.41 |
| Dividend Yield | 0.27% | 11/14 | 0.62% | 0.49% | 0.44% |

## Peer Comparison

| Rank | Name | Profit | Growth | Operation | Security | Cash | Rating |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 01 | Sailun Group (601058.SH) | B | B | B | C | B | B |
| 02 | Chuanhuan Technology (300547.SZ) | B | C | B | A | C | B |
| 03 | Aeolus (600469.SH) | C | B | A | C | B | B |
| 04 | Giti Tire Corp (600182.SH) | B | C | A | C | B | B |
| 05 | Langbo Technologies (603655.SH) | B | B | C | A | C | B |

## References

- [Company Overview — Profile, executives, shareholders, business breakdown](https://longbridge.com/en/quote/603655.SH/overview.md)
- [Financial Reports — Income, balance sheet, cash flow, dividends](https://longbridge.com/en/quote/603655.SH/norm.md)
- [Related News](https://longbridge.com/en/quote/603655.SH/news.md)
- [Filings — Company announcements and regulatory filings](https://longbridge.com/en/quote/603655.SH/filings.md)

---

> **Disclaimer: This article is for reference only and does not constitute any investment advice.**