Featured Blogs

Can the bottles withstand high temperatures in...

Can the bottles withstand high temperatures in a dishwasher without damaging the coating?

Aug 18,2026
High-grade stainless steel can withstand dishwasher heat, but coatings may be vulnerable. This article explains how coating quality and surface treatment affect dishwasher safety, and why hand washing is often the best choice for preserving bottle appearance.

Do you use electrolytic polishing for the inte...

Do you use electrolytic polishing for the interior surface to prevent rusting?

Aug 11,2026
本文解答关于不锈钢饮具内胆是否采用电解抛光来防锈的问题，介绍电解抛光的优势及不锈钢材质选择，并引导联系Qualflask获取专业建议。

What type of powder coating is used on the ext...

What type of powder coating is used on the exterior to prevent chipping?

Aug 11,2026
针对不锈钢饮水瓶外壳防掉漆问题，本文介绍了聚酯粉末涂料与环氧聚酯混合粉末涂料的特点，并指出表面预处理是涂层牢固的关键。作为不锈钢饮水器具制造商，Quanhu可提供定制表面处理方案。

Are the plastic components BPA-free and food-s...

Are the plastic components BPA-free and food-safe?

Aug 05,2026
The Quanhu S6005VH 600ml Portable Travel Tumbler is a BPA Free vacuum insulated cup with a 2-in-1 sip and straw lid. This blog explains that the plastic components are positioned as BPA-free and food-safe, and directs readers to contact Quanhu for further compliance information.

Do you offer bottles made from 316 stainless s...

Do you offer bottles made from 316 stainless steel for acidic beverages?

Aug 04,2026
This blog addresses the question of 316 stainless steel bottles for acidic beverages. As a professional drinkware manufacturer, Zhejiang Quanhu offers custom solutions and direct consultation to confirm material availability, while highlighting food safety, surface treatment, and contact details.

How can I audit the inspection process of a dr...

How can I audit the inspection process of a drinkware supplier remotely?

Aug 03,2026
This guide outlines practical steps to remotely audit a drinkware supplier's inspection process, using Zhejiang Quanhu Industry & Trade Co., Ltd. as an example. Learn how to review documents, conduct virtual tours, request demonstrations, use third-party inspections, and verify quality control systems from anywhere in the world.

Which international certifications are essenti...

Which international certifications are essential for a drinkware manufacturer?

Aug 02,2026
A guide to key international certifications for drinkware manufacturers, including FDA, LFGB, BSCI, ISO 9001, and Prop 65, plus an insight into Qualflask's strict quality control.
What quality control steps should a private label drinkware supplier follow?

What quality control steps should a private label drinkware supplier follow?

Aug 01,2026
Discover the essential quality control steps for private label drinkware suppliers, from raw material inspection to final packaging checks. Learn how compliance with certifications like BSCI and FDA builds buyer confidence, and why Zhejiang Quanhu prioritizes strict quality control.
What FDA compliance requirements must drinkware meet for US import?

What FDA compliance requirements must drinkware meet for US import?

Jul 31,2026
Discover the key FDA compliance requirements for importing stainless steel drinkware into the US: 21 CFR regulation, food-contact material safety, migration testing, facility registration, labeling rules, and GMP. Learn how QualFlask supports importers with certified materials, documentation, and robust quality control.
How to verify a drinkware factory's BSCI certification before placing an order?

How to verify a drinkware factory's BSCI certification before placing an order?

Jul 30,2026
This blog provides a practical 6-step guide to verify a drinkware factory's BSCI certification before placing an order, using the example of Zhejiang Quanhu Industry & Trade Co., Ltd. (qualflask.com). Steps include requesting the audit report, checking the amfori BSCI platform, matching factory details, confirming validity, requesting corrective action plans, and contacting the supplier directly. It also emphasizes the importance of additional certifications like FDA and LFGB.
How long does it take to produce and ship a private label order?

How long does it take to produce and ship a private label order?

Jul 29,2026
Discover the typical production and shipping timeline for private label stainless steel drinkware orders from Qualflask. Factors include customization complexity, order quantity, and shipping method. Contact for a personalized quote.
What materials and styles are available for custom drinkware?

What materials and styles are available for custom drinkware?

Jul 28,2026
Zhejiang Quanhu Industry & Trade Co., Ltd., a professional OEM/ODM stainless steel drinkware manufacturer, offers private label partners a range of materials (premium stainless steel) and styles (Daily Bottle, Hydration, Car, Coffee) for custom drinkware. With 65+ 3D modeling options and full customization services, brands can quickly create their own product lines. Contact [email protected] for inquiries.