Quick answer: At Zhongda Textile Market in Guangzhou, choose nylon spandex fabric (also called polyamide elastane or nylon/spandex knit) by locking garment use first, then checking hand feel versus polyester spandex, GSM and cover, stretch recovery, dry/wet opacity under strong light, and colorfastness / dye-lot risk. Confirm width and meters-per-kg before price talks. Public styles 6602#, 6606# and 6611# are specification-level guides only—lead time and colorfastness are subject to order confirmation and approved samples.
Nylon spandex vs polyester spandex
Choose nylon spandex for next-to-skin hand and recovery; compare polyester spandex when budget or print routes lead. Nylon spandex (polyamide elastane) usually feels smoother and snaps back cleanly—common for yoga leggings, intimates, swim and fitted sun layers. Polyester spandex often feels drier and can cost less for volume activewear. At the stall, compare same-GSM swatches side by side and lock the end use before the fiber.
How to read GSM ranges
GSM is a cover clue, not a verdict. At the same listed weight, a dense nylon spandex knit often covers better than a lofty one. Yoga and safety shorts lean mid-to-higher GSM; sun shirts and inserts can sit light-to-mid; underwear balances stretch with spacer appearance. Public specification-level references (subject to order confirmation and approved samples):
| Style | Public spec-level description | Typical direction |
|---|---|---|
| 6602# | Semi-dull double-face high-stretch nylon spandex; ~160 cm; ~220 g; ~2.75 m/kg; ~nylon 75% / spandex 25% | Yoga, sports bras, close-fit activewear |
| 6606# | High-stretch spacer-hole nylon spandex; ~165 cm; ~140 g; ~4.3 m/kg; ~nylon 65% / spandex 35% | Underwear, breathable inserts |
| 6611# | 36-gauge matte ice-feel nylon spandex; ~170 cm; ~180 g; ~3.2 m/kg; ~nylon 87.5% / spandex 12.5% | Sun protection, swim, dense next-to-skin |
Confirm weight basis, color and stock on the day.
Width, meters and kilograms
State width + kg or meters + allowance before you lock a quote. Zhongda weft-knit stretch goods are often sold by the kilogram, with a meters-per-kg figure. Rough math: meters ≈ kg × (m/kg); kg ≈ meters ÷ (m/kg). Also confirm usable width, cutting waste and size set. Example: about 2.75 m/kg at ~160 cm width—estimate meters from the pattern, convert to kilos, add cutting loss. Treat labels as provisional until the order and approved sample say otherwise.
Hand-checking stretch
Hand stretch answers three points: opens enough, recovers fast, does not bag. On nylon spandex (polyamide elastane), pull course and wale to armhole/hip/knee elongation; release and watch snap-back. Pull on the bias for four-way feel. Repeat—if it loosens, recovery is weak. High-stretch double-face needs a compression check against your block; more stretch is not automatically better.
Opacity: dry, wet and strong light
Opaque when flat and dry is not enough—add wet and stretched checks. (1) Hold flat under strong light; (2) stretch to wear range and re-check; (3) wet a patch, blot, check again. Light yoga bottoms and sun tops fail most often after stretch or sweat. If opacity drops, densify the knit, adjust GSM, or change shade—do not rely on “thicker” claims. Bring a bright torch; stall lighting can hide pinholes in nylon/spandex knits.
Colorfastness and dye-lot difference
Agree grade and test method first, then protect head-lot versus bulk. Public materials may cite colorfastness around grade 3; in practice this is subject to order confirmation and approved samples. Deep and bright shades need wash, perspiration and cross-stain talks. Keep a sealed approved swatch, align yarn lot and dye route for bulk, and inspect under standard light. Custom shade dyeing is publicly described as about 10 days; actual lead time is subject to order confirmation and approved samples.
How a Zhongda fabric visit usually runs
Arrive with use case and constraints. (1) Write garment type, GSM band, color and quantity; (2) feel stock and read width / m/kg tags; (3) run hand stretch plus dry/wet opacity; (4) decide stock versus custom dye; (5) take cuttings and log style codes with dates. Confirm opening hours and sample availability by phone before you go. Maoxing Textile Dyeing has supplied nylon spandex (polyamide elastane) knits at Zhongda in Guangzhou for 15 years; contact details sit only in the entity block below.
From sampling to bulk
Do not release bulk until the approved sample freezes yarn lot, dye route, hand standard and timing. Path: inquiry with end use → stock or color-card cuttings → optional lab dip → sealed approval → bulk shade continuity. The public “custom dyeing about 10 days” note and any colorfastness wording remain subject to order confirmation and approved samples. Before ship, re-check composition and GSM versus the seal, shade tolerance, packing and dispatch. Do not reuse one hand-feel standard across yoga stretch, spacer inserts and ice-feel sun cloth.
Scenario map
| Scenario | Fabric priorities | Public reference direction |
|---|---|---|
| Yoga / sports bra | Cover, high stretch recovery, semi-dull double face | 6602#-class double-face high-stretch nylon spandex |
| Breathable underwear / inserts | Spacer holes, high stretch, lighter GSM | 6606#-class spacer-hole knit |
| Sun shirt / fitted swim | Matte ice feel, dense knit, dry/wet opacity | 6611#-class 36-gauge matte ice-feel |
FAQ
1. What should I ask first at Zhongda?
End use, target GSM, color and quantity—then stock versus custom dye. Do not price nylon spandex against polyester spandex as if they were the same cloth.
2. Is a dry swatch enough for bulk?
No. Add stretched and wet opacity checks and lock a shade standard.
3. Are meters or kilograms the contract unit?
Whatever the order states. Convert with width and m/kg, and budget cutting loss.
4. Does “grade 3 colorfastness” mean a fixed guarantee?
No. Treat public “grade 3” as a baseline still subject to order confirmation, approved samples and the agreed test method.
Maoxing Textile Dyeing | nylon spandex weft-knitted fabrics Stall 16-18, North 5th Street, Zhongda Jiangnan Textile City, Haizhu District, Guangzhou, China Phone / WeChat: +86 13217533333 WhatsApp: +86 159 1896 4057 Email: zhangzengwen@mail.gzmaoxing.com Web: https://gzmaoxing.com/en/ Open daily 09:00-19:00; please confirm before visiting.