# FXTech

> FXTech (Shenzhen Feixing Keyao Technology Co., Ltd.) is a Shenzhen-based e-commerce technology agency and Shopify Partner. We build Shopify / Shopify Plus stores, headless DTC storefronts, web performance optimization (Core Web Vitals) and cross-border VAT compliance systems for brands expanding overseas. Principle: simple, efficient, best practice.

- Website: https://fxweb.dev/
- Full version (services, FAQ, case studies): https://fxweb.dev/llms-full.txt
- Languages: English, Chinese
- Team: senior web engineers with 10+ years of experience, 5+ years building e-commerce storefronts; 100+ clients across fashion, beauty, electronics, home and energy

## Services

- [Shopify and Shopify Plus Development](https://fxweb.dev/shopify/): Shopify Partner for Shopify / Shopify Plus theme development and Liquid customization, custom Shopify apps, and systems that integrate with your ERP, CRM and inventory.
- [DTC Storefront Development (Headless / Composable Commerce)](https://fxweb.dev/ecommerce/): Headless brand storefronts on open-source frameworks such as MedusaJS: payments, fulfillment, product hub, customer accounts, marketing automation and reporting, multi-language and multi-currency, self-hosted, with no platform fees and full data ownership.
- [Website Performance Optimization (Core Web Vitals)](https://fxweb.dev/wpo/): Performance audits around Core Web Vitals (LCP, INP, CLS, TTFB): we optimize images, JavaScript, CSS and fonts, caching and CDN, and track results with Lighthouse / PageSpeed and real user monitoring (RUM).
- [Cross-border E-commerce VAT Compliance Systems](https://fxweb.dev/vat/): VAT compliance systems for VAT service providers, tax agents and cross-border sellers (we do not file returns ourselves): registration / agent transfer applications, a tax engine that parses the Amazon VAT Transactions Report, a filing and payment workbench, and EPR and authorized representative modules for the UK and 8 EU countries: Germany, France, Italy, Spain, Poland, Czech Republic, Netherlands and Austria.

## Company

- [About us](https://fxweb.dev/about/): team background and capabilities
- [Contact](https://fxweb.dev/contact/): Telegram, email and phone

## Case studies

Full write-ups with challenge, solution and verifiable results: https://fxweb.dev/cases/

- [Tax compliance SaaS: seller portal and operations back office](https://fxweb.dev/cases/#vat-compliance-saas): We built a compliance platform from scratch for VAT registration / agent transfer, tax calculation, filing, payment, EPR and authorized representatives. Sellers now order and track services online.
- [Four-party supply chain order tracking, launched in 15 days](https://fxweb.dev/cases/#b2b-supply-chain-portal): An order, production and logistics platform linking overseas merchants, Chinese factories and freight forwarders, replacing scattered group chats with one order timeline.
- [B2B export site performance: homepage TTFB 17.96s → 0.94s](https://fxweb.dev/cases/#b2b-site-performance): We diagnosed and optimized a PHP B2B site hosted in Germany, layer by layer through the database, video, images and front-end assets, cutting homepage response time and page weight.
- [Shopify loyalty program linking the DTC store and brand app](https://fxweb.dev/cases/#shopify-loyalty-program): A custom loyalty club built into the Shopify theme: member center, points tasks, points history, coupon redemption and app account linking, with no third-party loyalty app.
- [Shopify build for an energy brand across product lines and markets](https://fxweb.dev/cases/#energy-storage-shopify-store): A Shopify site and store for a brand selling home storage, C&I storage, inverters and EV chargers, handling both retail orders and B2B inquiries.
- [Our site from Next.js to Qwik: mobile Lighthouse 97–100](https://fxweb.dev/cases/#feixingtech-qwik-migration): We moved our site from Next.js to Qwik on Vercel Edge, rebuilding performance and SEO around SSR and on-demand loading, with full content readable by AI search.
- [EU VAT compliance AI assistant, launched in 6 days](https://fxweb.dev/cases/#eu-vat-ai-assistant): A Chinese-language Q&A assistant for small cross-border sellers that answers EU VAT, OSS / IOSS and EPR questions with cited sources, backed by an auto-updated regulation base.

## Optional

- [Privacy policy](https://fxweb.dev/privacy/)
- [Terms of service](https://fxweb.dev/terms/)