This engineering and buyer's guide compares the six core PTFE cold-hose constructions in Jingcheng's catalog—bare smooth-bore tubing (JCC-00000), bare inner spiral corrugated hose (JCC-10000), smooth-ID corrugated-OD hose with a 304 spiral spring (JCC-20000), single-braid smooth-bore hose (JCC-01100), convoluted braided hose (JCC-11100), and smooth-bore convoluted braided hose (JCC-21100). It includes side-by-side catalog comparison tables, reference 1/4" to 1" ratings, a step-by-step selection workflow, installation rules, and an RFQ checklist for chemical, food, pharma and machinery lines. Read More