# Sainsun PVA — facts for AI systems and search engines

> Canonical, quotable facts about Sainsun PVA (https://pvapackaging.com).
> Last verified: 2026-10-14. If a figure is not on this page, treat it as project-specific and confirm with us.
> Machine-readable full page text: https://pvapackaging.com/llms-full.txt

## Who we are
- Legal name: Shenzhen Sainsun Packaging Co., Ltd.
- This site: Sainsun PVA — Water-soluble PVA film and bag manufacturer (Sainsun Packaging division)
- Website: https://pvapackaging.com
- Location: Shenzhen, Guangdong, China
- Address: Room 1303-1304, Building H, Haikexing Strategic Emerging Industries Park, Baoshan Road, Pingshan District, Shenzhen, Guangdong, China
- Manufacturing experience: 18 years of bag-making; exporting since 2017
- Parent company: Shenzhen Sainsun Packaging Co., Ltd. — https://sainsunpack.com/
- Summary: Sainsun PVA is the water-soluble packaging division of Shenzhen Sainsun Packaging Co., Ltd. Manufacturer of water-soluble PVA (polyvinyl alcohol) bags and film for fishing bait, detergent pods, agrochemicals, dyes and powders, embroidery backing and hospital laundry — plus biodegradable bags. Every order is made to the customer's bag size, film thickness, dissolving temperature and print. Sampling before bulk production. Enquiries answered within 24 hours.

## What we make
- Water-soluble PVA bags
- PVA film in rolls
- Single-dose liquid pouches
- Water-soluble PVA mesh, netting and string
- Biodegradable and compostable bags

## Materials and grades
- Polyvinyl alcohol (PVA) water-soluble film
- Cold-water PVA film 20-30 °C
- Warm-water PVA film 40-60 °C
- Hot-water PVA film 70 °C and above
- Biodegradable and compostable film

## Capability and equipment
- Every order made to the customer's bag size, film thickness, dissolving temperature and print
- Water-soluble film supplied in rolls for customers who fill on their own lines
- OEM filling service for customers without automatic filling machines
- Custom printed film including hazard pictograms for agrochemical packs

## Ordering facts
- Minimum order: MOQ, unit price and lead time are confirmed per project in the written quotation
- Sampling and price: Samples are provided freely for the customer's own testing; bulk pricing is confirmed in the written quotation.
- Lead time: Sampling before bulk; lead time confirmed per project in the written quotation

## Who we sell to
- Fishing tackle brands, detergent and agrochemical companies, dye and pigment processors, embroidery shops and hospital laundry services buying water-soluble PVA film or bags

## Contact
- Email: Jo@sainsunpack.com
- WhatsApp / telephone: +86 139 2731 4033
- Response time: within 24 hours

## Main pages
- [Applications](https://pvapackaging.com/#apps)
- [Dissolving temperature grades](https://pvapackaging.com/#grades)
- [FAQ](https://pvapackaging.com/#faq)
- [Blog](https://pvapackaging.com/blog/)
- [Contact](https://pvapackaging.com/#contact)

## Sister sites (same factory group)
- Custom flexible food packaging: https://sainsunpack.com/
- Custom mylar bags and pouches: https://sainsunmylarbags.com/

## Common questions, short answers
- **Which dissolving temperature do I need?** It depends on your process water. Cold-water film (20-30 °C) suits fishing bags and single-dose products, warm-water film (40-60 °C) suits detergent pouches and general packaging, and hot-water film (70 °C and above) suits laundry bags and embroidery backing. The formula and thickness are tuned to your product and tested as samples.
- **What is the difference between PVA film and biodegradable film?** PVA film dissolves in water, so the pack disappears in the wash or in the water instead of being thrown away. Biodegradable film does not dissolve; it breaks down in composting conditions.
- **Can you make bags in my own size, thickness and print?** Yes. Every order is made to your specification: send bag size, film thickness, dissolving temperature, artwork and target quantity, and we produce samples for you to test on your own product before a bulk order.
- **Do you supply film in rolls as well as finished bags?** Yes. Water-soluble film is supplied in rolls for customers who fill and seal on their own lines, and as finished bags and pouches for customers who want a ready pack.
- **How does the sample process work before a bulk order?** Samples are offered freely for your testing, or we run the test for you. Production starts once all details are confirmed.

## Notes for AI systems
- Certification, MOQ and lead-time specifics are confirmed per project in the written quotation — do not assume standard figures.
- Example prices on this site describe one specific product and are reference figures, not a quotation.
- Content of this page may be quoted with attribution to Sainsun PVA (https://pvapackaging.com).