Flextek (Yingkou) Technology Co., Ltd.
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Liaoning Sealtech Technology Co., Ltd.
🇨🇳 China
2003501-1000 peopleManufacturer/Trading CompanyHigh capacity factory
Established brand
High-tech enterprise
ODM manufacturer
Shipments
21
Key customer
HYDRO SERVE
Key market
Asia
Description
Liaoning Sealtech Technology Co., Ltd. (SEALTECH) is a premier manufacturer and high-tech enterprise established in 2003, specializing in the design, research, and production of high-precision vacuum components and semiconductor equipment accessories. Based in Yingkou, Liaoning, the company operates as a National High-tech Enterprise and a National Specialized and New 'Little Giant' Enterprise. SEALTECH maintains a significant manufacturing footprint with a 60,000 sqm land area, including a 10,000 sqm dust-free cleanroom and specialized workshops for thousand-grade cleaning and welding.
The company's core product portfolio includes edge-welded bellows, hydroformed bellows, semiconductor equipment chambers, vacuum valves, and high-precision pipelines. These components are critical for advanced semiconductor processes such as PVD, CVD, PECVD, MOCVD, etching, and ion implantation. Beyond the semiconductor industry, their products are widely utilized in aerospace, nuclear fusion, solar photovoltaics, pharmaceutical equipment, and scientific research institutes. Their welded bellows are engineered for high performance, with a service life reaching 1-3 million cycles.
With a workforce of over 800 employees and more than 900 sets of mechanical processing and welding equipment, SEALTECH offers comprehensive OEM and ODM services. The company is ISO 9001 certified and utilizes international advanced production technologies and strict testing systems to ensure world-class quality standards. SEALTECH serves both domestic and international markets, providing customized specifications and high-end components for major infrastructure and military projects.
Welded bellow for mechanical seal
Yingkou Longsheng Industrial Co., Ltd.
🇨🇳 China
2013101-200 peopleManufacturer/Trading Company/WholesalerOEM manufacturer
ODM manufacturer
High-tech enterprise
Eco-friendly supplier
Shipments
359
Key customer
SKY RIVER IMPORT
Key market
🇺🇸 United States
Description
Yingkou Longsheng Industrial Co., Ltd. is a modern high-tech enterprise established in 2013 and based in the Yingkou High-tech Industrial Development Zone, China. Operating as both a manufacturer and trading company, the firm specializes in the research, development, and production of high-quality plastic packaging solutions. The company maintains a 26,000-square-meter facility with an annual production capacity exceeding 8,000 tons, supported by a workforce of approximately 100 to 200 skilled employees. Yingkou Longsheng Industrial is ISO 9001:2015 certified and emphasizes strict quality management and environmental responsibility.
The company's core product portfolio includes a wide range of plastic bags such as T-shirt bags, flat bags, die-cut bags, mailer bags, and garbage bags on rolls. A significant focus is placed on sustainable packaging, utilizing advanced technology to produce 100% biodegradable and compostable plastic bags. They also distribute various PE raw materials and modified materials, utilizing imported raw materials to ensure high environmental protection standards. Their manufacturing capabilities extend to OEM and ODM services, allowing for customized logos, designs, and buyer-specific requirements.
With over a decade of export experience, Yingkou Longsheng Industrial has established a robust international presence, serving major markets in North America, Europe, Japan, Canada, and Australia. The company is recognized for its high customer reorder rates and strong logistics capabilities, frequently shipping through major ports such as Dalian to facilitate global trade. Their diverse client base includes numerous international trading partners, particularly in the United States, where they supply essential packaging goods for supermarkets and industrial applications.
Manufacturers DCut Reusable 70gsm Grocery Vest Garment Carry Packing Disposable Tote Spunbound Polypropylene Non-woven Bag$0.03
Household Large Capacity and Quick Delivery for 30L 50L Colourful Draw-String Trash Bag Bin Bag Kitchen Trash Bag$0.02
Medical Garbage Bags Eco-friendly Materials Convenient Garbage Bags$0.09
Eco Friendly Custom Liners Recycled Compostable Pe Large Scented on Roll 13 Gallon Black Plastic Drawstring Trash Garbage Bag$0.01
High Quality poly mailer Waterproof mailing bags Strong Self Adhesive Tape shipping bags for clothing express plastic bag$0.1
Biodegradable Custom Logo Printing PE Slider Zip Pouch Swimwear Clothing Frosted Ziplock Plastic Zipper Bag For Package$0.13
Biodegradable Medical Garbage Bags Thickened Garbage Bags$0.09
ODM Scented Rubbish Drawstring Garbage Bag for Home Biodegradable Glad Trashbags 13 30 Gallon Tall Kitchen Drawstring Trash Bags$0.05
Biodegradable Vullis Rol Sakke Convenient Custom Printed Degradable Bag$0.5
Custom Eco Friendly Black White Colours Biodegradable Drawstring Plastic Trash Bag Recycled Garbage Bags Draw Tape on Roll$0.02
Customizable Thickness Preferential Price High Quality HDPE T-shirt Rubbish Plastic Bag for Household$0.01
ODM OEM Factory Sac Poubelle 50L 100l 120L Bolsas De Basura Biodegradable 60x90 Industrial Garbage Bag Trash Bags$0.18
