What are the payment terms?

We accept LC and T/T as terms of payment.

What is the lead time?

The average lead time is one month for both peak and off-peak seasons.

Is customization available?

Yes, we offer flexible customization for fabric weight, lamination, and top/bottom styles.

Biodegradable Square Block Bottom Paper Valve Sack for Dry Mortar and Gypsum

Name: Biodegradable Square Block Bottom Paper Valve Sack for Dry Mortar and Gypsum
Brand: Chengda Pack Industry (Qingdao) Co., Ltd.
SKU: 2167389132

Shandong, ChinaChengda Pack Industry (Qingdao) Co., Ltd.

US$0.10-0.25

5,000 Pieces

Sample price:US$0.10/piece.Request sample

Product profile

Customization

Available

Usage

Industry, Food Wrapping, Fertilizer,Cement,Powder,Mortar,Flour,Starch

Material

Recycled Kraft Paper

Model NO.

Color

Natural,Brown,White,Custom

Coating

Coated

Feature

Moisture Proof, Waterproof, Anti-Rust, Greaseproof, Anti-Curl, Antistatic, Reusable

Grade

Custom

Printing Mode

Offset Printing

Appearance

Custom

Type

Cement Bag Paper

Shape

Valve

Application

Chemical, Cement, Sand, Fertilizer, Seed, Feed

Sealing Method

Heat-Sealing

Transparency

Non-Transparent

Waterproof Performance

Waterproof

UV

Treated

Width

45-65cm

Length

as Per Request

Denier

700-1500d

GSM

80-120G/M2

Printing

up to 5 Colors

Samples

Available

Lamination

25GSM

MOQ

10000PCS

Making Process

Plastic Packaging Bags

Bag Variety

Upright Bag

Transport Package

by Bale or Pallet as Per Request

Specification

customized

Trademark

CD Pack

Origin

China

HS Code

6305330090

Production Capacity

3000000PCS/Month

Key features

100% Virgin Kraft Paper: Crafted from high-quality, high-porosity kraft paper that offers exceptional tensile strength to prevent bag bursts during filling.

Micro-Perforation Technology: Features advanced micro-venting that allows air to escape rapidly for faster filling while keeping the fine powder securely inside.

Excellent Stackability: The square block bottom design ensures the bags stand upright and stack perfectly, saving up to 20% of warehouse and shipping space.

Automatic Self-Closing Valve: Designed for high-speed automatic packing lines; the internal valve sleeve seals automatically by the pressure of the product.

Company profile

Chengda Pack Industry (Qingdao) Co., Ltd.

Shandong, China

Business Type: Manufacturer/Factory, Trading Company CertifiedCustomization Options: Flexible customization CertifiedExport Year: 6 Years CertifiedNearest Port: Qingdao PortAverage Response Time: ≤2.51h CertifiedTerms of Payment: LC, T/T

AI-Powered supplier vetting

SummaryChengda Pack Industry (Qingdao) Co., Ltd. is a China-based trading company established in 2019 with seven employees and operations in Qingdao, Shandong. It offers multiple woven and flexible packaging products and reports more than 10 production lines, substantial stated product output, and export markets across South America, Southeast Asia, the Middle East, and North America. The company states that it has professional sales, service, design, and R&D teams, including a Malaysia-based sales and service team. An SGS audit record is provided with validity from March 19, 2025 to March 18, 2026, but the audit result is recorded as “0” without an explained interpretation. Evidence is insufficient to verify outsourcing controls, inventory, overseas warehousing, OEM/ODM services, raw-material traceability, or customer cases.

Supplier typeThe supplier is explicitly identified as a Trading Company and Limited Company registered in China, with its operating province in Shandong and city location in Qingdao. Its associated industry is wholesale and retail, supporting classification as a trading-oriented business rather than a clearly documented manufacturer.

After-Sales capabilityChengda Pack states that it has a professional sales and service team and a Malaysia-based team responsible for packaging bag sales and service in Southeast Asia. Specific after-sales processes, service-level commitments, inventory support, overseas warehouse capability, and showroom services are all marked unknown.

R&D capabilityThe company describes a design and R&D team established at the beginning of its operations and states that it develops packaging solutions for manufacturers and logistics companies. Nevertheless, product-development status, ODM availability, OEM capability, SDK-related R&D, and other structured innovation indicators are marked unknown.

Production capacityThe supplier reports operating more than 10 production lines and provides output figures for PP valve bags, BOPP laminated woven bags, PP woven bags, FIBC bulk bags, and PP woven fabric rolls, including 8,000 tons for fabric rolls. Its export markets include South America, Southeast Asia, the Middle East, and North America, while the records also identify Qingdao as the nearest port.

Product Q&A

Q:How to get sample?

1. Existing Samples: free, you just shoulder the courier charges will be ok. 2. Custom Samples : according to the specification, sample time: 5-7days

Q:What are the printing options?

We adopt offset and flexible printing with eco-friendly ink. Usually 4 to 5 printing cylinders are enough, with a charge of US$100 more or less for each color.

Q:Can the bag size be customized?

Yes, the width is available from 40-65cm and the length is made as per customer's need.

Q:What is the minimum order quantity?

The minimum order quantity is 1000 pieces.

Q:What certifications do you have?

Our products are certified under ISO 9001:2008 and FDA standards.